CK Tools T2944-22 Fast4 SDS Wood Drill Bit features 4 blades for faster waste removal and 100% more cutting blade than flat or auger bits. Cutting edges are ground with spur blades for a clean hole profile and breakout. The screw point allows for accurate positioning and pulls the bit through with less effort, offering class-leading cutting speeds. It has an SDS Plus drive shaft. Specifications include a largest diameter of 22mm and a smallest diameter of 22mm, with 1 bit included.