... clamp for 1/2"-3/4" dameter, and large clamp for 3/4" to 2-1/2" diameter lines 3 Pieces Line Clamp ... SetUse to clamp fuel, vacuum, brake and cooling system lines.- Includes ... small clamp for 1/8"-5/16" diameter, medium clamp for 1/2"-3/4" dameter ... /8" H - Shipping Weight: 0.66 lbs 3 Pieces Line Clamp Set Wire Clamp Set