Features: All-metal aluminum alloy, diy aluminum block, need to be assembled by itself. Better pressure pushes the filament into the printer nozzle. Suitable for CR-10, For CR-10S, For Ender-3, For Ender-3 PRO. The original aluminum alloy driver is supplied with CR-10S PRO. It can also be installed in Ender-3, Tornado... stable and durable. and Double gear extrusion mechanism, high extrusion force, ensuring smooth feeding. Specifications: Item type: CR10S PRO Extruder Material:aluminum alloy Color:Red Note: No retail package. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1Set x CR 10S Extruder Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.