MARINE GRADE 304 STAINLESS STEEL Premium 304 Stainless steel material with quality rubber cushioned. Salt resistant, anti rust, anti-corrosion, waterproof, oil-proof. Sturdy, strong and reliable. Quality rubber insulation on the clamps holds up flawlessly. Protects the tube well and keeps the clamp securely in place.  SPECIFICATION Clamp width (include the rubber cushioned): 15mm. Clamp hole Diameter: 1-1/4 inch. Clamp inside diameter: 1/4 inch. Fit for 1/4 inch (outside diameter) wiring, lines, pipes hoses or cables to a panel or frame application. Package Contents:  20 pack 1-1/4 inch LOKMAN cable clamps.