4PCS U-Groove Pulley,0840UU 8X40X20.7mm Metal+ Plastic U Type U-Shape Groove Guide Wheel Rail Ball Bearing Pulley Roller Good Mute Effect for Doors Drive Mechanical Equipment Pulleys

• SPECIFICATION :: ❶Name: Model: 0840UU ❷Type: U-Groove ❸Material: Metal, Plastic ❹Inside Diameter: 8mm Outer Diameter: 40mm Thickness: 20.7mm
• HIGH QUALITY :: This u-groove pulley is made of high quality material, these pulleys are durable, sturdy and portable.
• GOOD CUSHIONING EFFECT :: Internal lubricating grease, smooth operation, good cushioning effect.
• U-SHAPED GROOVE ::Roller guide wheel, U-shaped groove design, smooth reduces friction.
• APPLICATION :: There are a total of 4 discs in one set that you often use for many projects.

Features: Made of high quality material, these pulleys are durable, sturdy and wearable. Internal lubrication grease, smooth operation, good mute effect. U-shape groove design, smooth 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: 40mm/1.6in Thickness: 20.7mm/0.8in Quantity: 4pc Weight: 109g(approx.) Package Includes: 4 x Pulleys