Barrel Hose Clamp (100-104mm / 4.00")Premium Turbosmart Quick Release Barrel Hose Clamp 4. 00" 98 105mm (to suit most 3. 75" pipe + silicon hose assemblies) Turbosmart Quick Release Barrel Clamps can be handle much higher tension loads than traditional screw type band clamps and have an in built fastener bridge for a stronger, more reliable even distribution of clamping force, ensuring maximum life from your silicon. With the added benefit of having a quick release mechanism, saving time