Features: 1. Used for Insta360 series, SLR camera lanyard hole, self-timer lever lifting screw. 2. 1/4 Inch handle camera screw with 16cm adjustable hand wristband lanyard strap sling for tripod photo studio screw. 3. It can be used to install mobile phones, cameras, MP3, game consoles, bus cards, file packages, U disks, etc. Specification: Net Weight: 3.5g, Size: The whole length is 20mm, Material: Aluminum alloy + Polyester