For sale is a SET of 2 Greenfield MACHINIST TOOLING TAP 1. 1 1/4 - 4 ACME-2G SK 332418 BZ ST G HS GQ O4 Overall Length is 16" 2. 3/4 - 6 NA-G D4 G HS M2 Overall Length is 12" Condition is "used", so you need look at pictures very carefully.