Threepiece step drill kit. #2T- 3/16" to 1/2" ( 6 sizes), 3T- 1/4"-3/4" ( 9 sizes), #1T - 1/8" to 1/2" 13 sizes. These are constructed from high speed steel with a titanium nitride coating for long life. Feature a 1/4" hex shank for drill or drill/driver.We ship APO,INternational and do combine shipping. Check out my other items! Sign up for my email newsletters by adding my eCRATER Store to your Favorites