U Groove Pulley Wheel 4pcs 0840UU Guide Roller 8x39.5mm

1 Made of high quality material, these pulleys are durable, sturdy and wearable. 2 Internal lubrication grease, smooth operation, good mute effect. 3 U-shape groove design, smooth surface reduces friction. 4 There are total 4 pieces of pulleys in one set that you many use for many projects. 5 Widely used in doors and windows to track and drive mechanical equipment.

What's in the box
4 x Pulley Roller