Thread Size: M8 x 1.25mm; Drill hole size: 11mm 0.43 inch; Fastener Type: HollowMechanical internal thread, materials, uniform wall thickness, surface treatment, corrosion resistance, and high strength.Drill a hole according to the size of the rivet nut installation hole, insert the rivet nut, and tighten the locking nut with the rivet tool.Widely used in metal, household thin iron cabinet, roof, equipment casing, etc.Widely used in metal sheets or non-metal plastic, wood, and other sheets, rivet nuts can be firmly fixed on the to thread locking force.Colour:Color Material:MetalPackage Contents:25 * rivet nutsOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +- 1-3cm.