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Sterling 6.8mm Hollow Block

$18.99 - $19.99

Select Style & Size

  • Yellow, 13.5in
    $18.99
  • Yellow, 19in
    $19.99

6.8mm Hollow Block

Built from Sterling's RIT 900 cord, the Hollow Block 6.8mm is designed to function as a pre-sewn prusik or climb heist. Made with aramid fiber and sewn with Sterling's proprietary sewing pattern, this ultra-strong cord is designed to provide excellent griping power on climbing ropes with diameters of 7mm or larger.

  • Pre-sewn prusik serves on any climb
  • Technora fiber increases abrasion-resistance and overall durability
  • For use as a prusik or Klemheist knot on ropes
  • Item #STE0040

Material
aramid
Diameter
6.8mm
Length
13in, 19in
Strength
13.0kN
Recommended Use
climbing, rescue
Manufacturer Warranty
lifetime

Tech Specs

What do you think about this product?

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>Rating: 5

So I'm an idiot eh

Familiarity:
I've used it once or twice and have initial impressions

Anyway I get myself a climbing set-up that I don't really know how to use, grigri and this as a back up prusik. When it came time to repel, not knowing what I'm doing I don't control the rope and shoot right down a foot or two, the prusik tightens leaving me hanging 10 or so feet above the ground on this too tough climb. I mean yeah it's a coin flip on if I would have panic pulled or released the grigri and 12 feet even to a bad landing is 90% of the time going to be generally okay in the not dead sense but still a really feel that pound for pound, dollar for dollar this has got to rank up there on lifetime best purchases just because it's inexpensive, super light, and useful enough to save a fool from misadventure, would recommend even if you're not an idiot.

>Rating: 5

Almost too good...

Familiarity:
I've used it once or twice and have initial impressions
Height
5` 11"
Weight
195 lbs

I used this for the first time recently as a part of my rescue rig for military rappelling. I was looking for something with less bulk and quicker setup than a tubular nylon webbing autoblock. I'm glad that I tested it out first before needing it in an actual rescue setting. I used a klemheist with four wraps, and got stuck about four feet down into my rappel. The hollow block locked up so tight onto the main rope (Bluewater 11mm Assaultline) that there was no budging it at all. I had to tie in a secondary autoblock with a sewn runner and release the klemheist from the carabiner just to continue. Three wraps is enough!

>Rating: 4

Strong Performance

Great climbing heist that I have used many times. Strong and durable

>Rating: 5

Three wraps and good to go

Familiarity:
I've put it through the wringer

I've put this through its paces over the last few months, and I've been really impressed by the holding power it has with just three wraps. I was recently doing a long double rope rappel with a 9.4mm rope and a 6mm tagline, so I wrapped the hollow block around a 4th time thinking that the tagline might slip. It ended up being so solid that it was hard to move. While it is quite easy to make a prusik loop out of accessory cord, I prefer this for durability and safety. It offers absolute peace of mind during raps of any sort. Not to mention, every rock guide that I've interacted with carries one of these. If that's not an indication that you should too, then I don't know what is.

Thanks so much, Chris!

>Rating: 3

Didn't like it, prefer Beal jammy

Familiarity:
I've used it several times

Used for a few weeks to backup rappels. Works best as autoblock, prussik took longer to dress than Beal jammy and after loading was a pain to redress. Found Beal jammy, this now sits on pack with backup atc. Beal jammy: https://www.backcountry.com/beal-jammy-prusik

>Rating: 5

So great as an autoblock!

Familiarity:
I've used it several times

Is there really anything else on the market that can compete with the hollow block from sterling? If there is, I don't know about it. Buy one, you won't be disappointed!

>Rating: 5

best autoblock

Familiarity:
I've put it through the wringer

three wraps and you're in total control.

three
>Rating: 5

Climbed to long without it

Familiarity:
I've used it several times

I bought the 13.5 inch hollow block and it is great! I connect it to my leg loop when repelling and wrap it around the rope twice and it stays in place with no worry at all. This is now a must have item whenever I sport/trad climb outside.

>Rating: 5

trust them with my life

Awesome sling. Kind of in between your average dyneema and nylon sling for thickness and weight. But these are solid and at a perfect price point. These get the job done, I obviously trust them with my life.

>Rating: 5

Use to backup rap on ATC

Familiarity:
I've used it several times

Just started using this off my leg loop in an auto lock configuration on an extended ATC rappel. Super comfy. Three wraps does it, stays clear of my device and is easy to use. Nice on those long raps with OMG exposure.

>Rating:

Sterling HollowBlock

>Rating: 5

Must have for any type of rope work

Familiarity:
I've put it through the wringer

If you're climbing or canyoneering having a Hollow Block is a must. The aramid fiber is specifically used so it won't melt and bond to dyneema when used as a prussik like regular slings can do. Use it as a backup while repelling or many other uses.

Regular slings will not do as you described.

>Rating: 4

Don't Get Stuck

Familiarity:
I've used it several times

Sometime, you rappel off anchors, praying there is a set below you. THis tool can be super handy if you rap a line and cannot find a set of anchors and need to ascend back up. Such a simple thing to have on your harness, but can be a lifesaver.

>Rating: 5

Never forget a 3rd hand!

Familiarity:
I've put it through the wringer

I was introduced to the hollow block about 2 years ago and have never gone back. This piece never leaves my harness and it has made backing up my extended rappel so much faster and easier! Its great because I don't have to worry about the material being worn due to high heat friction and it allows me to rappel safely without having the jumpy jerky prussik using cord. It's also cut to the perfect length so I never have to guess where to tie my prussik. I've had mine for 2 years, it was previously used by a climbing partner and am just now replacing it because it is pretty dirty and I'd love to have 2!

>Rating: 5

Must have!

Familiarity:
I've used it several times

Great to have a couple of these because you never know when you will need to have a back up on your rappel system to fix something or to build a new anchor ect... Soft materiel that can take lots of heat to it. The 13.5 inch is the perfect size for my 9.8 rope that I use for sport climbing.

>Rating: 5

a must have

Familiarity:
I've put it through the wringer

I like having 2 of these on me during multi pitch climbs or when ice climbing. these super durable, work great and for me are a must have.

>Rating: 5

Great prusik cord

Familiarity:
I've used it several times

Great to have on your person during rappels

>Rating: 5

Third Hand is King

Familiarity:
I've put it through the wringer

Golden Rule of Rappelling, use a prusik, ALWAYS. Well traditional homemade prusiks made with nylon have some disadvantages when you introduce nylon on nylon, you have a lot of unwanted added friction to the mix, which will start to heat up quickly and start to melt the fibers of your rope and prusik. Well Sterling has addressed that problem here. This is made of a synthetic polymer fiber so it has a much higher melting point and it doesn't create as high of heated friction because it is to different materials. Bottom line, this is the way to go! Just pick one up, you will thank yourself later

>Rating: 5

Bombproof!

Familiarity:
I've put it through the wringer

I bought one of these after the guys at the local climbing shop recommended it, and I fell in love immediately! These things are so insanely durable, and seem like they might literally last forever. The material they're made of is designed to be extremely heat resistant, so it's perfect for all your friction hitches! Save yourself the trouble of re-tying prusik loops every couple weeks/months (depending on how often you climb); get one of these and you'll be set for at least the next year or two!

>Rating: 4

Like it so far.

Familiarity:
I've used it once or twice and have initial impressions

Replace this with some cord I had been using for an auto-block while rappelling of climbing routes. I've only used it a few times but like it so far. Seems like it will be even nicer when it gets broken in a bit.

>Rating:

What length do people prefer???

>Rating:

Is this the HollowBlock2 or the original HollowBlock?

This is the original Hallowblock.

>Rating:

Question: Is the size (13.5 or 19) the "circumference", the length before it was sewn, or something else? thx

Craig, That'll be the length when laid flat. I've got the 13.5 inch version and it's 13.5 inches from end to end. Questions: Feel free to contact me with questions on this product or any other climbing gear!

>Rating:

Is this the 13.5" or the 19"? The description says 13.5", the style/size dropdown says 19".

You can choose either size, in the drop down menu. If it's not giving you both options, there is either a technically difficulty, or we have sold out of one size. At this moment, we have plenty of both sizes. Questions? Reach me directly at: Emily Jenson Expert Gearhead ejenson@backcountry.com 801.746.7587

I just ordered two13.5 in hollowblocks, but got two 19 in which I did not want; do you have 13.5 inch length hollowblocks?

Emily handed this problem swiftly and with professionalism. She called me and included the 13.5 inch hollowblocks in a pending order I had for a Sterling rope. What a great company!

Thanks so much, for your praise, Robert. We are always happy to help get the right gear, so you can get outside! Reach out to me, anytime.

>Rating:

How UV-stable is this aramid, compared to...

How UV-stable is this aramid, compared to nylon?

Good question. Aramid is very UV sensitive and degrades fast unless coatings are applied. I suspect it is a UV resistant manufacture.