Swordfish 8015 - Alloy Steel Hand Threading Tap Set of 3 pcs Bottoming Plug Taper Uncoated Finish Square End 1/2"-16 Alloy Steel Materials, UNF Thread Straight Flute Type, Round with Square End Shank, Uncoated (Bright) Finish Each set includes 1 taper, bottoming and plug tap in the specified size Ideal for auto repair and machinery