Non-Stripping: The welded worm housing increases the breaking torque by 60%. Our hose clamp screw is big with deep thread. The band is non-perforated and thick to prevent deforming if there is over-torque. Our small hose clamps are heavy duty to provide superior clamping force and safe sealing. | Non-Metric Sizes: The slotted screw clamp hex head is 5/16". You can use either screwdriver or handy nut driver for quick tightening. The British diameter is marked on band surface for fast identification when using. | Protect Your Hose: The rolled band edge design is to prevent cutting into soft silicone, pvc or rubber hoses. The non-perforated band prevents it from extruding through the band notches. Our worm gear hose clamps are more reliable for automotive applications. | Hose Clamps Stainless Steel: The screw, buckle housing and band are all made of real 304 SS. The neutral salt spray test is 100 hours. With the superior corrosion resistance performance, our metal clamps can be used in indoor and outdoor places. | Widely Used: The effective diameter range of our adjustable hose clamp is 1-5/8 to 2-3/8", perfect as hose clamps 1-3/4, 1.75, 2 inch, automotive radiator hose clamps. They are ideally for family, auto tubing, plumbing, marine and industrial use.