Features: Multifunctional photography round tube clamp, equipped with a cold boot interfaces, it can be installed on a tripod or bike for use. Aluminum alloy material, wear-resistant, corrosion-resistant, antioxidant. Including 1pc round pipe clamp, 1pc PU40 quick plate, 1pc 1/4 double headed screw adapter, and 1pc 1/4 turn 3/8 screw. Suitable for 1/4 interfaces SLR cameras, motion cameras, fill lights, selfie sticks, etc. Can be used for various products with 1/4, 3/8, or cold shoe interfaces. Specifications: Material: aluminum alloy Color: black Size: about 9.5x4x2.50cm/3.74x1.57x0.98inch Suitable for round tubes with outer diameter from 19mm to 45mm Package Includes: 1pc Photography Strong Clamp 1pc 40mm QR Plate 1pc 1/4''-20 Male to 1/4''-20 Male Double Head Threaded Screw Adapter 1pc 1/4"-20 to 3/8"-16 Screw note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.