632221 SCREW PLATE SET UNIFIED COARSE, #OK31 1/4 TO 1/2 12PCS/SET

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 thread cutting range. When ordering, please specify the set number, thread cutting range, and thread type, (whitworth, metric, etc.), by indicating the exact code number.