Arca Swiss compatible quick release plate. Aluminum alloy material, CNC processing, durable and exquisite. Universal bracket designed for cellphone and cameras photography enthusiasts, travel photographers. Standard 1/4 inch screws,can install other accessories, such as tripod, ball head and light etc. Size: 3.30''*1.51'' *0.31''(L*W*H),can be extended to 4.21'' mm with the spring.