The 4 Way Clamp is an all metal cast aluminum clamp featuring a unique spring locking mechanism that allows you to instantly latch and release the locking collar around any tubing sized from 1.4" - 2.0" (35mm - 50mm) in diameter. Just a quick turn of the tension handle to secure it in place and your ready to mount any light fixture or accessory up to 66 lbs (30 kg) to light stands scaffolds quickly. The 4 Way Clamp has four recessed mounting locations distributed in 90 degree increments to accept a series of interchangeable accessories.