Thread Size: M8 x 1.25mm; Drill gap size: 11mm / 0.43 inch; Fastener Type: HollowMechanical inner thread, materials, uniform wall thickness, floor treatment, corrosion resistance, and high strength.Drill a gap in step with the scale of the rivet nut installation hole, insert the rivet nut, and tighten the locking nut with the rivet tool.Widely used in sheet metal, family thin iron cabinet, roof, equipment casing, etc.Widely utilized in metal sheets or non-metal plastic, wood, and other sheets, rivet nuts could be firmly fixed at the sheet to produce tight thread locking force.Colour:Color zincMaterial:MetalPackage Contents:25 * rivet nutsOnly the above equipment content, different products aren't included.Note: Light mirrored image and diversified displays could cause the color of the item in the picture a bit of various from the genuine thing. The size allowed error is +/- 1-3cm.