Reliable material: Made of polycarbonate, it offers good wear resistance, flame retardancy, and oxidation resistance to support your 3D printer performance. Broad compatibility: Suitable for most DIY 3D printer V-slot aluminum profiles, including models from brands such as 3, Anet, and others. Smooth operation: These 3D printer wheels provide smooth movement, low noise, high printing accuracy, and can help improve printing speed. Ideal accessories for 3D printers. Wide application: Commonly used for 3D printers, engravers, hot wire cutters, laser cutters, camera sliders, plasma cutters, robotics, furniture, and other DIY machinery. Dimensions: Outer diameter: 24 mm, Inner diameter: 5 mm, Height: 11 mm. Color: Transparent. Material: Transparent polycarbonate wheels. Package Contents: 16 x Polycarbonate pulleys. Note: Light and display settings may cause slight color variation between the image and actual item. Measurement tolerance: +/- 1-3 cm.