Its a quad piston extender, doesnt grab blocks though. Its 7x10 which is fairly compact. Its extremely fast! Its nearly as fast as it could possibly ever be... just a few spots where a tic or two could be taken off to make it a bit faster, but i didnt bother finding those points.
Well anyways here it is, comment any redstone things you want me to try out, and ill give it a go :P