Features:
1.These U-shaped pulleys are made of high-quality materials and are .
2.The internal lubrication of these U-shaped pulleys runs smoothly and has a good quiet effect.
3.These U-shaped pulleys are designed with U-shaped , and the smooth surface reduces friction.
4.There are a total of 4 pulleys in these U-shaped pulley blocks, and you can use them for many projects.
5.These U-shaped pulleys are widely used in doors and window to track and drive mechanical equipment.

Specifications:
Model: 0840UU
Type: U-
Material: Metal, plastic
Color: Black
Inner Diameter: 8mm/0.3in
Outer Diameter: 40mm/1.6in
Thickness: 20.7mm/0.8in
Quantity: 4pc
Weight: 109g(approx.)

Package Includes:
4 x Pulleys