-Made of 304 stainless steel, rust-proof, durable. -Safe to use, the inner wall has an anti-slip groove, which can effectively increase friction. -Weight: 280g -Commonly used in various engineering, suitable for tighten rope, fit for sunshade, tent rope, cloth line tightening. Package includes -8pcs M4 steel cable clamps -8pcs M6 steel cable clamps