Breeze B9224-0306 Heavy Duty Spring Loaded T-Bolt Clamp Effective Diameter Range: 3.06" - 3.38" (77.8mm - 85.7mm) Designed to compensate for thermal expansion of hose or fitting connections. Used on applications such as charge air cooling systems 3/4" (19mm) wide, 300 Series Stainless Steel Band Plated Carbon Steel Slotted Hex Screw High Strength, One-Piece Stainless Steel Trunnion Reliable, heavy duty method of assembling hose ducting connections and tubing.