These PBL clamps are perfect to hang your backgrounds onto your support system or clamp lights to stands. Heavy duty metal construction with rubber pads keeps things extra secure and damage-free. 4 1/4" long with 3" wide pads... Opens to 2 "... Tempered steel springs... Strong gripping action... Made of metal...Will last for years... No studio should be without these photo clamps, you will wonder how you every got along without them... In stock ready to ship