ITEM NAME:Rivet Nut Tool Kit 175pcs Mixed Zinc Yellow Plated Steel Rivnut Insert Nutsert Descriptio n Description Specification: Brand new Material: Carbon Steel, Zinc Plated Head Type: Flat Size: M3, M4, M5, M6, M8, M10 Quantity: M3 (45pcs); M4 (45pcs); M5 (35pcs); M6 (20pcs); M8 (15pcs); M10 (15pcs) Feature: Rivet nuts can be installed in many different kinds of material including steel, plastic and fiberglass etc. A ribbed body holds the nut in place so it won't turn when tightening a screw. The tool collapses the nut, creating a backside flange that holds the nut to the material. Strong and corrosion resistant. Not easy to rust. Easy to use. Durable and practical. Package included: 45pcs x M3*9mm Rivet Nuts 45pcs x M4*11mm Rivet Nuts 35pcs x M5*13mm Rivet Nuts 20pcs x M6*15mm Rivet Nuts 15pcs x M8*18mm Rivet Nuts 15pcs x M10*21mm Rivet Nuts Note: Please allow a little size errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. High quality buy, happy buyï ¼ 175pcs Set Rivet Nut Kit Mixed Zinc Steel Rivnut Insert Nutsert Threaded M3-M10.175pcs Set Rivet Nut Kit Mixed Zinc Steel Rivnut Insert Nutsert Threaded M3-M10. Rivet nuts can be installed in many different kinds of material including steel, plastic and fiberglass etc. 45pcs x M3 9mm Rivet Nuts.