Material:Adjustable clamping made of 201 stainless steel material, flexible and ductile.Sturdy and durable, not easy to deform and rust, strong antioxidant capacity.High hardness stainless steel, 2 times harder than copper , 10 times higher than aluminum Size: 36 pieces in total, various sizes including: 10 pcs 10-16mm, 27-51mm, 6-12mm, 13-19mm , 16-25mm, 19-29mm, 18-32mm, 21-38mm 4 pieces of each type. They can meet your daily needs. no clearing the steel strip for the strength of the beer, which does not impair the use. The hole is smooth and burr-free, and the quality is not rough Easy To Use:Loosen the screw by a screwdriver, adjust the size, then tighten the screw, : 0.6mm in thickness, 8mm in width, easily adjusted by a screwdriver Using Widely Range: suitable for domestic and industrial applications, secure hoses hose cable tube fuel lines for plumbing, automotive, electronics and applications