Is Discontinued By Manufacturer :No Product Dimensions :11.81 x 3.94 x 5.91 inches; 4.3 Pounds Item model number :1810-0100 Date First Available :May 10, 2016 Manufacturer :Accusize Co., Ltd. ASIN :B01FGFFDAU high speed steel, Tin Coating. Straight Shank One of each size in both 2 & 4 flute: with 3/8'' shank:3/16'', 1/4'', 5/16'', 3/8'', 7/16'' With 1/2'' shank: 1/2'',9/16'' With 5/8'' shank: 5/8'',11/16'' With 3/4'' shank: 3/4''