3-Piece Step Drill Bit Set (#1, #2, #4), Dual-Flute Step Bits Chuck Keys (1) MNPT Coupler

(1) MNPT Coupler

Advanced circuit design automatically compensates for ambient temperature changes

Composite handle to reduce vibrations

1/4" NPT Male H-Style Coupler

For clamps on CV boots

3-Piece Step Drill Bit Set (#1, #2, #4), Dual-Flute Step Bits Chuck Keys (1) MNPT CouplerFeatures and Benefits: JAM FREE Performance: Dual flute design provides greater speed and control Up to 2X faster: Optimized for cordless drills in high speed Rapid Strike Tip: Creates fast, accurate starts and generates less heat Up to 4X longer bit life: Optimized geometry with Black Oxide coating to cut faster and produce less heat Laser engraved reference marks: Easily stop on any hole size Includes bits #1 (48 89 9201), #2 (48 89 9202), and #4