Features:*Replacement Tip Mandrel Head For Rivet Nut Tool Hand Riveter Tip Spare Part*The riveting nut pole and the nut the mouth to be possible essential to assemble are laying aside together.Easy to use and forestall loss.*Save and update nut rivet mandrel rather than buying a new riveter!Specifications:Product Information: 21PCS Aluminum Nut SetRivet Nut Head: M3//M5/M6/M8/M10 Iron Galvanized nut:M3(20pcs)/ (20pcs) /M5 (20pcs) /M6 (20pcs) /M8 (20pcs) /M10 (20pcs) Package Contents:1PCS Hand Rivet Nut Head20PCS Iron Galvanized nuts