Features: Make of quality aluminum alloy & ABS-plastic materials, the appearance is exquisite, strong, comfortable and durable. Double gears with stable performances, high efficient heat dissipation, provide a solid and reliable feed for hot end. 3x14mm fixing plate connection hole, suitable for Ender3 CR10 3D printers. 2x10mm hole, this position can be installed with an auto bed leveling sensor, but it does not fit with the bracket, you need to print the bracket to install. V6 hot end kit and volcano hot end kit are optional, you can choose according to your requires. Package Includes: 1x 3D Printer Extruder Heated End Kit Specifications: Material: Aluminum Alloy+ABS-plastic Type: V6 hot end kit, Volcano hot end kit(optional) note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.