Breeze TB275 Standard T-Bolt Clamp Effective Diameter Range: 2.75" - 3.06" (66.9mm - 77.8mm) 3/4" (19mm) wide, 300 Series Stainless Steel Band Plated Carbon Steel Bolt, High Strength, One-Piece Stainless Steel Trunnion Meets or exceeds SAE Spec. J1508 for T-Bolt clamps Superior welded construction, Floating bridge liner Reliable, heavy duty method of assembling hose ducting connections and tubing.