Super Primalloy high speed steel taps with high strength precision ground threads.
High carbon tool steel hex dies.
37 piece set in a molded plastic case includes 4-40 - 1/2" USS, 10-32 - 1/2" SAE & 1/8 NPT Plug taps; 6-32 - 1/2" USS & 10-32 - 1/2" SAE dies; die stock; 1 standard & 2 T-handle tap wrenches, thread pitch gauge.