Gauging Drill Kit; Minimum Drill Size #40; Maximum Drill Size #80; Increment Drill Size #1; Drill Sizes #40 to #80; Shank Type Straight; Material High Speed Steel; Process Pressure Bonded; Number of Drills 41; Case Material Plastic; Includes GB3020 Tapered Broach, 1/4 Inch Hex Handle; Application Gas Orifice, Burner, Carburetor Jet