BSPT 1 1/2" x 11TPI - 4" O/D Circular Solid Dies are used for cutting external threads, either by machine or by hand when using a die stock, which are available here - https://www.gwr-fasteners.co.uk/tap-wrenches-die-stocks--conduit-products-3135-c.asp. These dies have been manufactured by VÖLKEL, with 100 years of experience in manufacturing taps & dies, VÖLKEL has become one of the worldwide leading suppliers for threading tools. 

Applications Include:

• unalloyed and low alloyed steel
• non abrasive material up to 900N/mm²

This is not a stock item therefore please allow 1-3 working days for dispatch. As this is not kept as a stock item, this is non-returnable & non-refundable.