1. Extrusion gears are closely matched with U-shaped bearings 2. The extrusion force is uniform to avoid slippage and grinding 3. All metal aluminum alloy 4. For 1.75mm filament 5. DIY aluminum block, easy to assemble 6. Product size: 16x89x162mm 7. Used in Creality 3D Ender-3 series, Ender series, CR-10 series, CR100 3D printer
