Description: Fit for CR-10, for CR-10S, for Ender-3, for Ender- . A double gear for extrusion mechanism, high extrusion force, ensuring smooth feeding. The original aluminum alloy aluminum alloy controller is supplied with the CR-10S PRO,stable and durable. All-aluminum alloy with aluminum alloy, DIY aluminum block, must be assembled by yourself. High quality and 100% brand new. Better pressure pushes the filament to the printer nozzle. Specification: Material: aluminum alloy Color: Red Item Type: Mk8 Extruder Size Chart: Size:Approx. 150x100x30mm/5.9x3.9x1.2inch Package Includes: 1 Piece Double pulley extruder 1 Piece (left) PTFE tube 2 Pieces M MK9 coffee color silicone sleeve 4 Pieces High temperature heat bed leveling spring 1 Piece 42 motor Note: All dimensions are measured by hand, there may be small deviations. Color may vary slightly due to the color setting of each individual monitor. Thanks for your understanding. Please enjoy your happy shopping time!