5/16" HEX (7.9 mm) wide on both sides

1. 1/8"-1/4"*51mm, M3~M6

2. 1/4"-5/16*61mm, M6~M8

3. 5/16"-7/16"*68mm, M8~M11

4. 7/16"-9/16"*71mm, M11~M14

5. 9/16"-3/4"*80mm, M14~M19

Surface treatment: zinc phosphate

Material: 6150