■ Beryllium copper alloy and Aluminum bronze material ■ DIN3120 Standard. ■ Die forged. ■ Impact Type. ■ It suitable for use where space is narrow or deep concavity to tighten or loosen bolts and nuts

■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ DIN3122 ■ Die Forged ■ Used for driving manually operated sockets for working in restricted places.

■ Aliuminuim Bronze Alloy and Beryllium Copper Alloy ■ DIN3122 ■ Die Forged ■ Tighten or loosen hex bolts and nuts directly

■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ QB/T2613.1 ■ Die Forged ■ The bent open end can be used in narrow space

■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ Q/ZBF-136A ■ Precision Casting ■ Different with the combination wrench, the ring end adopts ratchet structure.

■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ DIN3113 Standard ■ Die Forged ■ Both ends generally fit the same size of bolts and nuts