For Whitworth Coarse Threading with One Tap & One Round Split Die for Each Size
These sets are designed for cutting threads of a variety of sizes, easily, and all with one set .
Suitable for jobs involving a wide range of on site threading work.
There are single tap or three tap sets available in the same tread cutting range.
Thread Cutting Size: 1/4, 5/16, 3/8, 7/16, 1/2, 5/8, 3/4, 7/8, 1
Diam of Die: 50 mm
Pcs/Set: 20 pcs