[DURABLE CONSTRUCTION] Crafted from highquality metal and plastic materials these UGroove pulleys are built to last. Their sturdy design ensures longterm wear resistance making them ideal for heavy duty applications in doors and mechanical equipment.
[SMOOTH OPERATION] Equipped with internal lubrication grease these pulleys deliver effortless rolling and silent performance. The advanced mute effect reduces noise during operation providing a seamless experience for both residential and industrial use.
[FRICTION REDUCING DESIGN] Featuring a precisely engineered Ushape groove design these wheels minimize surface friction for optimal performance. The smooth rolling surface enhances efficiency while maintaining consistent motion in track and drive systems.
[VERSATILE SET] This complete set includes 4 premium UGroove pulleys for multiple projects and replacements. The standardized 8x39.5x20.1mm dimensions make them compatible with various mechanical systems and DIY applications.
[WIDE APPLICATIONS] Specifically designed for tracking and driving mechanisms these pulleys excel in window door and equipment systems. Their robust construction and reliable performance make them suitable for both professional and home improvement projects.

Spec:
Features:
Made of material, these pulleys are durable, sturdy and wearable.

Internal lubrication grease, smooth operation, good mute effect.

U-shape groove design, smooth surface reduces friction.

There are total 4 pieces of pulleys in one set that you many use for many projects.

Widely used in doors and to track and drive mechanical equipment.

Specifications:
Model: 0840UU
Type: U-groove
Material: Metal, plastic
Color: Black
Inner Diameter: 8mm/0.3in
Outer Diameter: 39.5mm/1.6in
Thickness: 20.1mm/0.8in
Quantity: 4pc
Weight: 109g(approx.)

Package Includes:
4 x Pulleys

Note：