Tools & Gear Driver Bits Insert Bits

5300-PD4X25 #4 Pin Drive 25mm Insert Bit 25mm Insert Bit The Bordo range of tamper resistant security fastener insert bits are designed for the effective and reliable installation and removal of the world"s most popular security fasteners. All Bordo standard screwdriver bits are manufactured from premium heat treated alloy steel. Insert bits are not magnetic - they achieve magnetisation when used in conjunction with magnetic bit holders. Insert bits are a cost effective solution and inexpensive to replace in comparison to longer power bits.