Tiger Clamp Spiral Double Bolts Clamp Tiger clamp Spiral double bolts clamp 1)Material: Made of zinc-plated carbon steel, stainless steel is avialable 2)Designed to be used on Tigerflex hoses designed with spiral helix outer cover 3)Threaded protective cap for safety 4)Both hex nuts should be tightened equally to prevent leakage 5)Two or more clamps are recommended for 5" ID hose and larger How to choose the right spiral clamp? Spiral Clamps for use on convoluted hose. Looking at the end of the hose: Use clockwise(CW) clamps if the hose spirals away from you in a right hand wrap. Use counter-clockwise(CCW) clamps if the hose spirals away from you in a left hand wrap.Check your hose before ordering.