Description: Assorted in 5 Size - 1/4" (6.4mm), 5/16"(8mm), 3/8"(9.5mm), 1/2"(12.7mm), 5/8"(16mm) Made of 304 Stainless steel material with quality rubber cushioned. Salt resistant, anti rust, anti-corrosion, durable in use. Perfect to apply in automotive/car, industrial, boat/marine, windshield, household etc. Fits for wiring, cables, pipe, hose, rack, line management and restoration. Specification: Cable clamp screw hole diameter: 6.5mm Fit for M6 (1/4 inch) bolt Package Includes: 12Pcs 1/4-inch (6.4mm) Pipe Clamps 10Pcs 5/16-inch (8mm) Pipe Clamps 6Pcs 3/8-inch (9.5mm) Pipe Clamps 12Pcs 1/2-inch (12.7mm) Pipe Clamps 4Pcs 5/8-inch (16mm) Pipe Clamps Note: 1. Please allow slightly difference due to manual measurement. 2. Color may be slightly different since different monitor. Thanks