Product description:

Type: O-shaped Z-shaped double groove triangle pulley
Applicable: O-shaped Z-shaped V-belt
Outer diameter: 32/40mm, 40/50mm, 50/60mm
Groove width: 10mm
Applicable: O-shaped Z-shaped V-belt
Material: aluminum alloy
Mounting screws (free)
Smooth transmission/high precision.
CNC precision machining/easy assembly.
Wide range of applications: motors, micro spindles, model gear construction

Depending on the diameter of the motor shaft, purchase a pulley with the same hole diameter. This size won't be too big or too small, it will be just right. (For example, if the shaft diameter is 10mm, buy one with a hole diameter of 10mm.)

Package Included: According to your choice!