This OWI robotic arm edge is a wonderful educational tool. The arm has a grip that opens and closes with a wrist range of motion up to 120 degrees and an elbow range of motion up to 300 degrees. Arm has a vertical reach of 15 inches and a horizontal reach of 12.6 inches. The base rotates 270 degrees. Unit can lift up to 100 grams. The controller has five switches, motors and joints. Assembly of the kit does not require soldering. This one of the geekiest gifts for engineers and is perfect for the techie in your family.