For sale is a SET of 3 LSI MACHINIST TOOLING TAP 1. 1 1/2 - 4 NA-2G Rougher Overall Length is 17" 2. 1 1/2 - 4 NA-2G Semi-Finisher Overall Length is 17" 3. 1 1/2 - 4 NA-2G Finisher Overall Length is 17" Condition is "used", so you need look at pictures very carefully.