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