LEIGAO HIGH QUALITY -Made from Galvanized iron with quality rubber cushioned. Salt resistant, anti rust, anti-corrosion, waterproof, oil-proof. Clamps are sturdy, strong and reliable. The quality rubber insulation on the clamps holds up flawlessly. It is pliable which protect the tube well and keeps the clamp securely in place.WIDELY USED -Clamps are marine grade. Perfect to apply in automotive, industrial, boat/marine, windshield, household etc. for wiring, cables, pipe, rack, line management and restoration. No matter in salt water/air environment.Size -Cable clamp screw hold diameter: 6.5mm, suitable for 6M( 1/4 inch) screw bolts and nuts to thread. Cable clamp inside diameter range: 1/4 inch/6,5/16 inch/8,3/8 inch/10,1/2 inch/13,5/8 inch/16,3/4 inch/19STYLISH DESIGN -The P-Style design makes the clamps stylish, flexible and innovative. Strong and reliable. Easy to twist, bend, manipulate when install.ENVIRONMENTAL FRIENDLY -It can be reused and recycle if you do not want them to stay on the place thanks to the high quality material which makes them worked last for years.Product Name: Fuel Line ClampsMaterial:Galvanized iron + rubbercolour:Black + silverPackage Contents:12PCS*1/4 inch/610PCS*5/16 inch/810PCS*3/8 inch/108PCS*1/2 inch/138PCS*5/8 inch/164PCS*3/4 inch/19