Scandvik 08134037038 Stainless Steel Hose Clamp (20, 32-44 mm, 1 1/4"-1 3/4", 12mm Band, 13644), 10 Pack All 316 Stainless Steel Construction Rolled up band edges prevent cutting into the Hose. Six degree thread pitch angle creates a vibration proof clamp All pressed worm gear housing increases the strength of the clamp by 30%.