VOLKEL - BSPT & NPT Tapered Pipe-Thread Circular Solid Dies: Required BSPT 1/8" x 1"O/D Circ. Solid BSPT 1/8" x 1.5/16"O/D Circ. Solid BSPT 1/4" x 1.5/16"O/D Circ. Solid BSPT 1/8" x 1.1/2"O/D Circ. Solid BSPT 1/4" x 1.1/2"O/D Circ. Solid BSPT 3/8" x 1.1/2"O/D Circ. Solid BSPT 1/4" x 2"O/D Circ. Solid BSPT 3/8" x 2"O/D Circ. Solid BSPT 1/2" x 2"O/D Circ. Solid BSPT 3/4" x 2"O/D Circ. Solid BSPT 1/2" x 2.1/4"O/D Circ.Solid BSPT 1" x 2.1/4"O/D Circ.Solid BSPT 1" x 3"O/D Circ.Solid BSPT 1.1/4" x 3"O/D Circ.Solid BSPT 1.1/2" x 4"O/D Circ.Solid BSPT 2" x 4"O/D Circ.Solid NPT 1/8" x 1"O/D Circ. Solid NPT 1/8" x 1.5/16"O/D Circ. Solid NPT 1/4" x 1.5/16"O/D Circ. Solid NPT 1/8" x 1.1/2"O/D Circ. Solid NPT 1/4" x 1.1/2"O/D Circ. Solid NPT 3/8" x 1.1/2"O/D Circ. Solid NPT 1/4" x 2"O/D Circ. Solid NPT 3/8" x 2"O/D Circ. Solid NPT 1/2" x 2"O/D Circ. Solid NPT 3/4" x 2"O/D Circ. Solid NPT 1" x 3"O/D Circ. Solid NPT 1.1/4" x 3"O/D Circ. Solid NPT 1.1/2" x 4"O/D Circ. Solid NPT 2" x 4"O/D Circ. Solid