Installing right now, the 60 piece set on an 8' x 10' wall. Seem to have plenty of hold. It came with a "How to build a climbing wall" book which has provided some helpful tips. One thing to note, they recommend 100 - 200 t-nut holes per 4x8 sheet of plywood for flexibly in route setting. The big 60 pack only comes with about 45 t-nuts though, plenty for the holds provided, but not nearly enough to fill the # of holes you should have. I am ordering and would recommend purchasing additional t-nuts when putting your wall together. Perfect selection for starting out a climbing wall though!