HIGH QUALITY-The whole hose clamp (including the band. housing and screw) are all made of premium duty black coated stainless steel material. with high performance of corrosion resistance and acid resistance.Salt resistant. anti rust. anti-corrosion. waterproof. oil-proof. Clamps are sturdy. strong and reliable. WIDE ADJUSTABLE SIZE RANGE- Clamp assortment kit are flexible with wide adjustable size range from 14 to 102mm .4pcs 1 Inch(14-27mm) .4pcs 2 Inch(27-51mm). 4pcs 3 Inch(52-76mm). 4pcs 4 Inch(78-101mm). Powerful function: Adopts an open inner and outer ring structure and fastened with bolts. Smooth surface. torsion-resistant and pressure-resistant. tightly locked and large adjustment range. Provides an excellent seal with a variety of hose materials. effectively solves the problem of liquid and gas leakage of the hose. WIDELY USE- Clamps are used in securing ducting. dryer vent. hoses. pipe. cable. tube. fuel lines etc. Perfect to apply in automotive. industrial. mechanical. agriculture. boat/marine. shield. household etc. Both indoor or outdoor. WORRY-FREE PURCHASE- We take pride in delivering a quality product. If within 90 days. you have any questions with our product. . I will reply you within 24 hours and we will solve them ASAP.