These rails are really awesome and big:
1) 21" long x 3.5" wide x 2.75" tall
2) 23" long x 2.5" wide x 3.25" tall
3) 20" long x 2.5" wide x 2.25" tall
Never underestimate a good rail. They are very versatile. Depending on how they are installed they can be pinches, jugs, double-handers, under clings, slopers, side-pulls, ledges (did I miss anything?). I wish I had added these rails to my wall sooner. I just didn't understand how much fun they were to climb on and all the variety they offered. The Font texturing on these is very nice providing little grooves to get you finger pads into. And if you want something more "moveable", Atomik makes a ton of bolt on rails too!! I have several varieties of Atomik rails and love all of them.