• Made of high-precision 303 stainless steel with great corrosion resistance for long-term use. • Flat and smooth surface without burrs with deep and clean threads for effortless installation. • The set includes 6 screws with half thread in three sizes: 17 mm, 20 mm, and 26 mm total length (2 units each). • Wide compatibility with cameras, tripods, monopods, heads, selfie sticks, and quick release plates. • Integrated semi-circular handle design allows for manual tightening and loosening without additional tools.