3 piece thread restorer file set by Lang Tools. Covers thread pitch for outside threads in SAE and metric. TPI included are 9,10,11,12,13,14,16,18,20,24,27,28 and 32. Millimeters are .75,1.00,1.25,1.50,1.75,2.00,2.50 and 3.00. Nice quality set of thread files Made in the USA!.We ship APO,FPO, International and combine shipping.