Alfa Tools CSHTS70513 6-40 Carbon Steel Hand Tap Set Taper/Plug/Bottom Hand tap 3-piece set 6-40 national fine thread size Contains 1 each: taper, plug, Bottoming Precision-made from high carbon tool steel; ideal for hand threading in routine maintenance, repair work and for Rethreading applications Quantity: 1 set of 3 boxed