Campbell Fittings - T-Bolt Band Clamp: 3.77 to 4.06″ Hose, 3/4″ Wide, Stainless Steel - 48499362 - MSC Industrial Supply
Jersvimc 20Pcs 3/4 Inch Stainless Steel Conduit Clamps, Two Hole Strap U Bracket Rigid Pipe Strap Metal U Clamp Conduit Strap Tension Clips U-tube Clamp Heavy Duty - Amazon.com
3/4 in. Stainless Steel Hose Clamps Clamp-It Buckles