BT40 Pull Stud Spanner Features: 1.Apply to BT40 retention knob CNC pull stud MAS403-1982 Japanese Standard. 2.The Pull Stud Spanner won't damage the pull studs. Avoid skidding and accidents. 3.High quality medium carbon steel is adopted as materials of spanner head. The surface hardness of spanner is higher than pull studs reaching HRC58-62 to be durable. 4.Blackening the surface of the spanner and installing the rubber handle after chroming gives it a delicate appearance and a comfortable feel. 5.Each batch of products would be sampled for toque testing to ensure the safety.
ER32 Nut Spanner Features: 1.Apply to ER32UM NUT. 2.The ER nut adopts annular groove design. Fix accurately and avoid skidding. 3.High quality 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. 4.Blackening the surface of the spanner and installing the rubber handle after chroming gives it a delicate appearance and a comfortable feel. 5.Each batch of products would be sampled for toque testing to ensure the safety