From the manufacturer Makita E-03442 Stronger hold, less drops Pack quantity 1 The Premier Torsion Bits are exact fit; the machined bit tips fit screws with minimal variance. Impact Premier range is colour coded for easy recognition of the head shape of the bit. The Makita Impact Premier magnetic bit holder (available separately) is ideal for use with Impact Premier bits for extra holding power on the screw. The bit holder is designed to allow the bit holder’s torsion section to bend under load to take the pressure off the bit tip for increased durability in high torque applications. Makita E-03442 Premier Mag Boost The Makita Premier Torsion Bits are a new range of screw bits and sockets, superseding the Makita Impact Gold range of torsion bits, specially designed for use with Impact Drivers. The Premier Torsion range has been specifically designed for high torque demands required by professional users in all industries. Impact Premier screw bits and sockets are constructed from a new material; engineered from special steel with heat treatment, improved hardness (HRC) and the torque value (Nm) to ensure maximum strength and flexibility for a longer lasting bit.