This is a complete assortment of the most commonly used Milwaukee Selfeed Bits for hole drilling. The kit includes 1 inch, 1-1/8 inch, 1-1/4 inch, 1-1/2 inch, 1-3/4 inch, 2-1/8 inch, 2-9/16 inch diameters and a 5-1/2 inch extension coupling in an impact resistant carrying case. Replacement "Case Only" is sold as part number 48-55-0775.FEATURES: Assortment of most commonly used selfeed bits for big hole drilling. Bit diameters: 1 in., 1-1/8 in., 1-1/4 in., 1-1/2 in., 1-3/4 in., 2-1/8 in., 2-9/16 in.