Milwaukee SDS Plus Drill Bits 2 Cut offer the maximum in drilling speed and durability. They have a dynamic, chisel-shaped drill head that ensures swift penetration and optimal material removal. They have a tough carbide tip held by high strength brazing that offers an unrivalled durability even in steel-reinforced concrete. They also have a unique 2-flute design which reduces vibrations and transfers the energy directly to the bit tip. Available in a range of sizes. This Milwaukee SDS Plus M2 Drill Bit has the following specification: Diameter: 5.5mm Working Length: 100mm Overall Length: 160mm