Very popular set for mini lathes with 1/2" shank tool post. Set includes adjustable turning tool holders with 5/16" square shank straight, left and right styles each fitted with 1/8" HSS tool bit and hex keys. Mini cut off tool holder with 5/16" square shank fitted with 1/16" x 3/16" x 2-1/2" HSS blade and hex key. Double ended boring bar with 3/8" diameter, 1/2" shank holder with 1/8" HSS tool bit and hex key. Single knurl tool holder. 4" divider, 4" inside caliper and 4" outside caliper. 1/2" lathe dog bent, 1/2" lathe dog straight and 4" machinist scriber. 1/16" square head center punch and steel rule 6" with clip.