Milwaukee 48 89 9223 Step Drill Bit Set 31 Hole Sizes, 1 8 in to 1 3 8 in, Black Oxide Finish, Fractional Inch G3251202 Item Spring Wound Timer Type Analog Mechanical Item Spring Wound Timer Type Analog Mechanical Timing Range 0 to 5 min Contact Form SPST Hold Feature No Faceplate Color Silver Max CAT IV 600V AC Response Calculation TRMS AC Current Measurement Resolution Not Applicable Minimum Capacitance Measurement 1 nF Fuse Access Yes AC Voltage Measurement Resolution Not Applicable Removable Screen No DC Current Measurement Resolution Not Applicable Current Leakage Testing No Intrinsically Safe ADDITIONAL FEATURES Data Logging Frequency Measurement Resolution 0 375 Shank Type Machining Straight with Three Flats Drill Bit Case Type Plastic Number of Drill Bits 4 Flute Type Spiral Sub Brand Secure Grip(TM) Drill Bit Point Type Conventional Point Spiral Direction Right Hand Package Quantity 1 Black Oxide