Value Collection - SAE Size 40, 52 to 76mm Diam Stainless Steel Heavy Duty Worm Drive Clamp - 31884463 - MSC Industrial Supply
Everbilt 4 in. Galvanized Steel Worm Gear Clamp MC4HD - The Home Depot
This Worm Drive Clamp is a 300 Series Stainless Steel Construction Clamp Band, housing and screw are 410 series stainless steel. Screw is 5/16" slotted hex head.
3/8-5/8" Dia 5pcs 316 Steel Adjustable Worm Drive Gear Clip Hose Clamp - Silver Tone - 1" x 0.8" x 0.3"(L*W*H) - Overstock - 28884038