Original RedAluminum Btech Double Gear Pulley Drive Extruder KitKit for CR-10S PRO Ender-3 3D Printer

Advantage:1. Double gear extrusion mechanism, high extrusion force, ensuring smooth feeding2. The original aluminum alloy driver is supplied with CR-10S PRO. It can also be installed in Ender-3, Tornado... stable and durable.3. All-metal aluminum alloy, diy aluminum block, need to be assembled by itself4.Better pressure pushes the filament into the printer nozzlePackage included:1 x Dual Pulley Extruder Kit (motor is not included)