It is lightweight. Suitable for GoProYi 4K Eken. Made of Stainless Steel, and stays unrusted even when it's used in the sea. Thumbscrews Compatible with GoPro will complete your GoPro kit: Handy extra screws so you don't miss those great shots. Compatible with All GoPro Hero Models and Accessories: Quality Stainless Steel Nut and Bolt provides long life. High Quality Standard Long Screw with Cap, length: About 2.2 inches.Package Include: 2 x Screw.