Check the listing for details. 5 Pieces Folding Knife Handle Fastening Rivet Thumb Stud Push Button Axis Screws. Condition: New. Listed at 10.19 USD. MJR KNIVES Item Specifics Material : 416 steel Total Length: 12.3mm M3 Screw length : 3mmPackage Includes : 5 Pieces This is a high-end folding knife opening and closing nail / push nails, made of 416 stainless steel. Full length: 12.3mm (nail nut tightening) Nut nail nailed after the middle of the largest diameter: 6mm, the top diameter: 4mm Child nail thread length: 4mm Thread: M3 Screw diameter: 4mm, Sub-nail screw length: 1mm Female nail screw length: 1mm Installation tips: The installation of this nail need a T8 plum screw, do not install the screw or tighten the screw, resulting in late scratches the screws.Suitable for folding blade thickness 2-4MM use.Folding blade hole must be 4mm. or greater than 4mm. MJR KNIVES