1. Top bead limit (Safety screw), realize quick installation and prevent cold shoe accessories from falling off; 2. There are 3x anti-reverse positioning pin screw holes with a hole distance of 9mm around the 1/4 screw. After installing the positioning pin, it can be used for 2x 1/4 screw holes with a hole distance of 9mm to prevent reverse rotation and prevent the equipment from loosening and causing the equipment to fall off. 3. Aluminum alloy CNC processing, small and light weight, Mini appearance product net weight is only 12g; Aluminum alloy surface process: the surface is anodized Size: assembled product size 26x24.5 x 10mm type: A/B/C Colour:black+red/black Material:aluminum alloy Package Contents: 1 x cold shoe seat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.