Cable clamp screw hole diameter: 6., 5mm, fit for M6( 1/4 inch) screw bolt to through them. Features:Made from 304 Stainless steel material with rubber cushioned.The special R-type design makes it very easy to install and remove.The wrap of rubber pad reduce the extrusion and vibration effectively during transportation and prolong the lifespan of pipe and itself.Perfect to apply in industrial, boat/marine, windshield, household etc. for wiring, cables, pipe, rack, line management Features:Made from 304 Stainless steel material with quality rubber cushioned. RS PRO Silver 316 Stainless Steel Clamp Jumper, 25mm Max. Bundle | RS 304 Stainless Steel Cable Clamps Kabelklem 63mm Wire Clips Uxcell 2-1 2 63mm 304 Stainless Steel Rubber Cushioned Insulated R Shape Metal 10pcs Cable Clamp R-vorm Metalen Klem 63mm Diameter R Clamp Made from 304 Stainless steel material with quality rubber cushioned. Buy Uxcell 20mm(0.8") 304 Stainless Steel 2 Holes Rigid Pipe Strap Tension Tube Clamp 8 Pack at for wiring, cables, pipe, rack, line management and restoration. The special R-type design makes it very easy to install and remove.