AlwaysH 4 pcs U Groove Pulley 0840UU Groove Wheel U Type U Pulley Roller Guide Wheel 8x40x20.5mm (4pcs)

【WIDELY USED】 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 which you often use for many projects.

【DURABLE, STURDY AND USABLE】 This U-groove wheel is made of high quality material. These pulleys are durable, sturdy and easy to wear.

【SMOOTH OPERATION】Internal lubrication grease, smooth operation, good mute effect.

【U-SHAPE GROOVE DESIGN 】 U-shaped groove design, smooth surface reduces friction.

Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, There may be color differences, please refer to the actual item received.