Nickel-chrome finish prevents corrosion and full-polish finish makes easy to clean. Oval handle for a more comfortable grip. 15° offset angle facilitates performance in difficult areas. 30° recuperation angle. Opening size: 5/16″ x 3/8″. Total length: 4-1/4″.URREA Sae Full Polish 12-Point 15 Box-End Wrenches ITEMOPENING SIZETOTAL LENGTH (A)OUTER DIAMETERHEAD THICKNESS 1120 5/16″ x 3/8″ 4-1/4″ 15/32″ 15/32″ 9/32″ 1122 3/8″ x 7/16″ 4-5/8″ 41/64″ 9/16″ 5/16″ 1125 7/16″ x 1/2″ 5″ 23/32″ 41/64″ 21/64″ 1126 1/2″ x 9/16″ 5-3/8″ 51/64″ 23/32″ 23/64″ 1130 9/16″ x 5/8″ 5-3/4″ 57/64″ 51/64″ 13/32″ 1134 5/8″ x 11/16″ 10-5/8″ 63/64″ 57/64″ 7/16″ 1135 11/16″ x 3/4″ 11-1/4″ 1-1/16″ 31/32″ 15/32″ 1139 3/4″ x 7/8″ 13-1/8″ 1-15/64″ 1-1/16″ 33/64″ 1140 13/16″ x 7/8″ 13-7/8″ 1-15/64″ 1-5/32″ 17/32″ 1145 15/16″ x 1″ 15-1/2″ 1-27/64″ 1-21/64″ 9/16″ 1150 1-1/16″ x 1-1/8″ 17-1/4″ 1-37/64″ 1-1/2″ 41/64″ 1151 1-1/16 x 1-1/4″ 18-1/4″ 1-47/64″ 1-1/2″ 43/64″ 1155 1-1/4″ x 1-5/16″ 19-1/4″ 1-13/16″ 1-3/4″ 45/64″ 1160 1-1/4″ x 1-3/8″ 20-1/4″ 1-29/32″ 1-3/4″ 23/32″ *1162 1-7/16″ x 1-1/2″ 22-1/4″ 2-1/16″ 1-63/64″ 51/64″ *1164 1-5/8″ x 1-11/16″ 24-1/2″ 2-25/64″ 2-25/64″ 21/32″