Product Description Toptul GBAQ1301 3/8" DR. 12PT Socket Rail Set 13pcs Specifications Finish: Polished Size: 1 /4", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 19/32", 5/8", 11 /16" , 3/4", 13/16", 7/8" (BBEB1208-1228)