Manufactured from Carbon Steel and HSS. Precisely Hardened and Tempered for long Life. All Taps are right hand. Left Hand Taps also available. Packed as set of 3 Pcs (Taper Tap , Second Tap and Bottoming Tap). Also available in BSF, UNF, UNC, BSP, BA, BSPT and NPT Threads. Machine Taps also available.