G BSP Pipe Thread 1/2 x 14 Solid Die HSS-E (Part Cobalt) for INOX (Stainless Steel) & High Tensile. INOX (Stainless Steel) and General use. Dies are to DIN 5158 Spec in HSS-E (Part Cobalt). High Cutting Ability and uninterrupted swarf flow in direction of feed.