These 100% brand new and 100% Stainless steel clamps provide high tensile strength, For Plumbing, automotive, industrial and home uses, Description： Clamp Range: 13-32mm or 1/2" to 1-1/4" Material: Stainless Steel SS301 Band Width: 12.7mm or 1/2" Band Thickness: 0.6mm Slotted Screw size: 8mm or 5/16" NOTE: Choose right Hose clamp Calculate your hose Outside(overall) Diameter Make sure it's in the range of 13-32mm or 1/2"-1-1/4" Package Includes: 100pcs 1/2in to 1-1/4in Hose Clamps