Milwaukee SWITCHBLADE™ 5-PC Selfeed Bit Plumber's Kit is expertly designed for repetitive cutting of large holes in wood, making it an essential tool for plumbers and woodworkers alike. This innovative kit features the SwitchBlade bit, which allows you to remove and replace blades easily instead of resharpening them. Each time you change the hardened steel blade, you essentially get a brand-new bit, ensuring consistent performance and longevity. The aggressive feed screw design enables you to pull the bit through wood quickly, resulting in faster drilling and increased efficiency. The kit includes a variety of bit sizes—1-3/8", 1-1/2", 2-1/8", and 2-9/16"—along with blades, feed screws, set screws, a 5-1/2" Quik-Lok® extension, and a hex key, providing everything you need for versatile and reliable operation. Model Number: 49-22-5100