Universal Carbon steel Countersink (Dia)12mm (L)50mm.Suitable for this countersink is constructed from carbon steel which means it's extremely hard durable and incredibly heat resistant.

UniversalDrill bit & countersink 3 Pieces.This Universal countersink drill bit set comes with 3 pieces and can be used with wood.

Universal HSS Drill bit (Dia)1.5mm (L)40mm Pack of 2.Suitable for this pack of metal drill bits are constructed from high speed steel which means they're extremely hard durable and incredibly heat resistant.