BRITISH STANDARD PIPE TAP & DIE SET BSP BSPP TAP DIE SET SET CONSISTS OF : SET OF 2 TAPS - ONE TAPER & ONE BOTTOM TAP 1/8" x 28 TPI, 1/4" x 19 TPI, 3/8" x 19 TPI , 1/2" x 14 TPI, 5/8" x 14 TPI, 3/4" x 14 TPI, 7/8" - 14, 1" - 11 TPI. SPLIT DIE SIZES AS UNDER: 1/8" x 28 TPI - 1" OD 1/4" x 19 TPI - 1.1/2" OD 3/8" x 19 TPI - 1.1/2" OD 1/2" x 14 TPI - 2" OD 5/8" x 14 TPI - 2" OD 3/4" x 14 TPI - 2" OD 7/8" - 14, 1" - 11 TPI PLUS FREE THREAD CHART. EMAIL US FOR ANY HARD TO SOURCE TAPS/DIES AND DIENUTS. EMAIL US FOR ANY QUESTION ?