We are offering round threading dies . round threading dies 2"sizes : 3/4" to 1" bsw, bsf, unf & unc, 20mm to 24mm in course and fine pitches, 1/2" bsp to 3/4" bsp.sizes above 1" to 1 1/2" bsw, bsf, unc & unf in mm above 24mm to 40mm in course & fine pitches can be available in different diameters.