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Available in either single or double, the Cassin Copper Heads are a necessity for any serious aid climber's rack. Ranging in size from 4mm to 10mm, Copper Heads are designed to be pasted into vertical seams and cracks that are too thin for nuts or cams. When crack size permits the use of a double, you can stand on the confidence of having the greatest vertical crack-holding power of any mash-able protection.
- Copper Heads ranges from 4mm to 10mm in diameter to accommodate a host of small seams
- Although more difficult to mash than aluminum heads, copper heads provide greater holding power in vertical cracks
- When there is sufficient space in the crack, Copper Double Heads provide the greatest holding power of any malleable protection