Chicago 57713 Jobber Drill Bit Set 1 16 in Smallest Drill Bit Size, 1 2 in Largest Drill Bit Size 12G114 Overall Length 4 in Overall Length 4 in Oxygen Included Regulator Manual Regulator Display Screen Type LCD Operating Temperature Minimum 40 Degrees F Communication Protocol Wireless Includes Test Gas Yes Measurement Range Carbon Monoxide (0 to 1 11M 1993 Measurement System Fractional Inch Shank Type Straight Left Right Hand Right Drill Style Jobber Drill Drill Bit Point Type Conventional Point Primary Material Application All Materials Coolant Fed Non Coolant Through Material Machining High Speed Steel Material Grade Machining General Purpose Aircraft Drill No Shank Type Machining Straight Number of Drill Bits 15 Flute Type Spiral Drill Bit Case Type Metal Drill Index Material Machining High Speed Steel