Selected:
• Material : CR-MO STEEL • Size : No.1 : 1/8″-1/4″ ( M3-6 ) No.2 : 1/4″- 5/16″ ( M6-8 ) No.3 : 5/16″-7/16″ ( M8-11 ) No.4 : 7/16″-9/16″ ( M11-14 ) No.5 : 9/16″-3/4″ ( M14-18 )