The inserts nuts are made of high quality carbon steel,blue zinc plated on the surface,make them have high hardness, perfect wear resistance, smooth,non-slip without burr,can ensure long time using
You can drill a well-sized hole by using a drill bit,Make sure that threaded inserts is inserted vertically into the hole.Then screw the insert into the hole using the supplied hexagon wrench
Threaded inserts can be used to repair filing cabinets, chair legs, headboards and footboards of wooden furniture.
Insert head size: 0.461" / 11.7mm, body size: 0.315" / 8mm, threads size: 0.410" / 10.4mm; 1/4"-20x15mm-78PCS,with 9mm Black high speed steel twist drill and 6mm hex spanner
The inserts nuts works good for for soft woods of pine, plywood, fiberboard,work perfectly on the furniture,also great used for hard wood,solid wood, It is also used well in high-grade furniture combination