48-25-5420 Milwaukee 1-3/8" Switchblade Replacement Blade This innovative replaceable blade system provides maximum productivity by eliminating downtime and the cost to resharpen. Each bit comes standard with a second replacement blade allowing the bit to cut like new again. Available in the sizes that plumbers, HVAC contractors and electricians use most frequently, Swtichblade™ selfeed bits are designed for drilling holes in all types of wood for pipe, vents, gas lines, and bulk wire routing.Replacement blades are made with hardened steel for long lifeSize engraved on each blade