ER25UM+ER32UM+ER40UM ER Nut Wrench Set ER Spanner for Collet Chuck Lathe Clamping Nut CNC ER 25 32 40$$Tools & Hardware Other

Apply to ER25UM ER32UM ER40UM NUT. The ER nut adopts annular groove design. Fix accurately and avoid skidding. Medium carbon steel for the whole body casting with high strength. The surface hardness of spanner is higher than ER Nut reaching HRC58-62 to be durable. Blackening the surface of the spanner and installing the rubber handle after chroming gives it a delicate appearance and a comfortable feel. Each batch of products would be sampled for toque testing to ensure the safety.