I love my Kreg jig and the clamps so I was glad to get them to help hold the pieces of wood in place when I use the screws. The first issue I noticed is that the flat clip keeps falling off the ball, which really annoys me. Second, it only opens 1 1/2 inches wide, so it won't work with Thinker plywood. It will also rip the end of the plywood if you're not very careful when removing it. The cocking mechanism is also very small and in an awkward spot. You'll also need two of these if you want to keep the wooden pieces from moving all over you. It's actually easier to use Bessey clips instead. .