Holds work in any position, leaving hands free for soldering, gluing, assembling and repairing. Versatile alligator-type spring clamps hold object firmly and can be positioned independently at any angle. Six ball joints combined with four thumbscrews permit you to hold clamps in the exact position you want. Clamps open to 5/16" and crossbar is 5" long. Heavy stable base is 2" square. Nickel-plated hardware.