Ridgid 66060 Hand Ratchet Threader Die Head Complete, 12R 1-1/2-Inch HS BSPT 66060 Diehead, Cmpl 12R 1-1/2 Hs Bsp This item is used for Hand tools & Tool Organizers ,Multitools This product manufacture by United States High-Speed Dies (HS): recommended for threading higher strength steel pipes 12-R Die Heads also suitable for use with 700 power drives BSPT = British Standard Pipe Taper Nominal Pipe Size: 1/2-Inch Minimize Threading Time