Patented ER32UM CNC nut wrench or spanner
1.The ER Nut Spanner won’t damage the ER Nut. Avoid skidding and accidents.
2.High quality medium carbon steel is adopted as materials of spanner head. The surface hardness of spanner is higher than ER Nut reaching HRC58-62 to be durable.
3.Blackening the surface of the spanner and installing the rubber handle after chroming gives it a delicate appearance and a comfortable feel.
4.Each batch of products would be sampled for toque testing to ensure the safety.