Combination Drill and Tap Set Number of Pieces 6 High Speed Steel Bright (Uncoated) Thread Sizes Included 1/4 In.-20 #10-24 #10-32 #12-24 #6-32 #8-32 Thread Standard UNC Thread Direction Right Hand Coolant Fed Non-Coolant Through Case Type Plastic Tap Type Twist Drill and Plug Tap Thread Type UNC