General description This 2Pack Super Clamp Crab Photography is a versatile tool designed to securely attach to various objects such as cameras, lights, umbrellas, hooks, shelves, and plate glass. Its universal design allows for mounting virtually anywhere, making it an essential accessory for photographers and videographers. Technical specifications Thread sizes: 1/4 inch-20 and 3/8 inch-16 Maximum opening diameter: 50mm Clamping range: 0.6 inch - 1.73 inch in diameter Net weight: 4.6 oz Best weight load: 0.5 - 2.5 kg Material: Aluminum Alloy Color: Silver + Black Other information Package Contents: 2pcs * Crab Clamp Note: Light and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.