First of all, you should know that I am very picky about my capstones. This last setup, I think I used about 200 of these. is that it comes with a platter to place the keystone on while you hit it, so you don't have to place the keystone on the floor or against the wall. into the wall plate, they snap easily I know I have bought keystones in the past which are very tiring for my fingers Generally they are reliable, simple and comfortable to hold