48-25-5135 Milwaukee 2 in. Switchblade Self Feed Bit The Switchblade 2 in. Self-Feed Bit features steel construction for durability and a feed-screw design for fast drilling. The self-feed bit also includes a replaceable blade system for productivity. Size and model number engraved on each bit for convenience.Steel construction for durabilityAggressive feed-screw design allows the bit to pull through the wood for fast drillingReplaceable blade system provides excellent productivity by eliminating downtime and the costs of re-sharpeningReplacement blades made with hardened steel provide a long life (replacement blades not included)