US Stock BT30 Pull Stud Spanner Retention Knob Wrench for Janpanese Standard MAS-403 BT30-45°/60°/90° Retention Knob 42 CrMo Material Rubber No Skidding$$Tools & Hardware Other

The wrench head is made of high-quality medium-carbon alloy steel. The whole is quenched, the surface is blackened, and The surface hardness of spanner is higher than pull studs reaching HRC58-62 to be durable. The surface of the wrench rod is chrome plated, and the tail is equipped with a rubber handle, which has a beautiful appearance and a comfortable feel. Each batch of products would be sampled for torque testing to ensure the safety. The Pull Stud Spanner won't damage the pull studs. Avoid skidding and accidents.