HELLO! This is my first arm like thing that could only grab things in front of it. it could not rotate in any way. the claw was a desgn from the mindstorms idea book. it was a very simple arm, but it was LITERALLY the third robot i built, and back then i thought it was awesome- NOT ANYMORE. Overall it was a quite silly project and only is posted because it was my third robot. SEE IT WORKING AT http://www.youtube.com/watch?v=-i42If2u2w4 -properpropeller