■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ Q/ZBF-131D Precision Casting ■ Hexagonal head design increased the contact area with fasteners and firmly grip.

■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ QB/T2613.10-2005 ■ Die Forged ■ Used for d

■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ Q/ZBF-129B ■ Precision Casting ■ Strong nylon belt will not slip ■ Prevent the surface from damaging

■ Q/ZBF-129A ■ Die forged ■ Used for tighten or losen bigger sizes pipes and pipe fittings. ■ Aluminium Bronze Alloy and Beryllium Copper Alloy

■ DIN17200 ■ Die forged. ■ Used for tighten or loosen bigger sizes pipes and pipe fittings ■ Aluminium Bronze Alloy and Berryllium Copper Alloy

■ DIN5234 ■ Die forged ■ Aluminium Bronze Alloy and Beryllium Copper Alloy ■ Clamp mouth prevent workpiece slidding and ensure the max rotate in restricted space