1.100% brand new2.Made of high quality material, durable and practical to use3.These are inserted into a hole in the print that is slightly smaller than the insert, and set in place using a soldering iron to melt the plastic around the insert.4.you must design a slot compatible with the nut, then put the nut into the slot and fix it while fixing the screw5.great compatible with restocking one of our insert assortments.Color:GoldMaterial:Coppersize:Overall Length (OAL): 6.4mm(Approx.)Top Outer Diameter: 5.6mm(Approx.)Bottom Outer Diameter: 4.85mm(Approx.)Package Contents:40 * threaded insertsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.