Type: ER20A nut, outside hexagonal nut 34 mm maximum overall diameter
Length: Handle body length 50mm, total length containing nuts 58mm
Shaft hole: 16mm (+0.02mm) the need to install heating expansion
Material: Special quality steel,high hardness.
Usage: The motor shaft extension rod sleeve on the motor shaft, and both sides of the screw is tightened.
1 X ER20 A-16mm Motor shaft tool holder