Gauging Drill Kit; Minimum Drill Size #60; Maximum Drill Size #80; Increment Drill Size #1; Drill Sizes #60 to #80; Shank Type Straight; Material High Speed Steel; Process Pressure Bonded; Number of Drills 21; Case Material Plastic; Includes 1/4 Inch Hex Handle; Application Gas Orifice, Burner, Carburetor Jet