Size: 8x40x20.7mm
Characteristics:
Model: 0840UU
Type: U-groove
Material: metal, plastic
Black color
Inner diameter: 8mm
Outside diameter: 40mm
Thickness: 20.7mm
Quantity: 1pc
Weight: about 27g

This U-groove wheel is made of high quality material. These pulleys are durable, sturdy and easy to carry.
Internal lubrication grease, smooth operation, good mute effect.
 U-groove design, smooth surface reducing friction.
 This grooved pulley is widely used in doors and windows to track and drive mechanical equipment. There are a total of 4 pieces of pulleys in one set that you often use for many projects.

The package includes:
4 x pulley