Set of 4 U-shaped guide wheels 8 × 40 × 20.7 mm

General description Made of high-quality metal and plastic, this set of 4 U-shaped guide wheels is designed for durability and portability. The U-shaped groove design ensures a smooth surface that reduces friction, providing a good silencing effect thanks to the internal lubricating grease. Technical specifications Model: 0840UU Type: U-shaped groove Material: Metal, Plastic Color: Black Inner Diameter: 8mm Outer Diameter: 40mm Thickness: 20.7mm Weight: Approx. 109g Quantity: 4pcs Usage These pulleys are widely used in doors and windows to track and drive mechanical equipment, making them suitable for various projects.