9 Pcs Pack Black Aluminium Pulley Wheels Roller Bearings for 3D Printer

Features: 1. Pulley wheel bearings suitable for 3D Printer. 2. Slide flexible, low friction. Perfect choice for 3D printer. 3. Durable and long lasting, ensures long service time. 4. Made of aluminium, lightweight and high quality. 5. Great replacement parts for 3D printer to replace your broken one. Specifications: Suitable: For 3D Printer Condition: 100percent Brand New Model: Movable Pulley Material: Aluminum + Plastic Color: Black Bore Diameter: Approx. 5mm 0.2inch External Diameter: Approx. 21.5mm 0.85inch Height: Approx. 7mm 0.3inch Weight: About 58g Package List: 9 x Pulley Wheels Bearing