• Product name: O-type wrench
• Material: Cast lron Hardness HRC45-48°
• Scope of application :Suitable for the removal or fastening of ER type nuts.
• Product features: ergonomic design at the handle, anti-slip, wear resistance, corrosion resistance.   
• Cast lron Quenching treatment, high hardness and good toughness.Strong and durable.
• In line with human mechanics, more beautiful, more convenient and labor-saving.   
• Rubber package handle, easy to use without hurting hands.
• The surface is treated by electrophoresis, which has a protective effect and strong corrosion resistance.
• High precision, precise bite without slipping.   Complete category, cost-effective.
• The wrench is more durable after high temperature treatment.
• Suitable for the removal or fastening of ER type nuts.

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Model	A	C	L	Nut
ER16	55	32.5	200	ER16
ER20	58	36	210	ER20
ER25	63.5	43	245	ER25
ER32	72	51	280	ER32
ER40	86	63.5	292	ER40

  

In line with human mechanics, more beautiful, more convenient and labor-saving.   Rubber package handle, easy to use without hurting hands.

 

The surface is treated by electrophoresis, which has a protective effect and strong corrosion resistance.

 

High precision, precise bite without slipping.   Complete category, cost-effective.

 

 

The wrench is more durable after high temperature treatment.

 

Suitable for the removal or fastening of ER type nuts.