Features Enhanced Compatibility: Compatible with CR10, CR10 S4, and CR10 S5, replacing fragile acrylic parts with aluminum block and spring, ensuring a longer lifespan and improved reliability. Versatile ment Compatibility: Equipped with a special Bowden tube connector, suitable for all 1.75mm ments, providing flexibility and ease of use for various printing needs. DIY-Friendly: Complete toolset included, enabling easy self-installation, ideal for DIY enthusiasts looking for a seamless upgrade process. Portable and Efficient: Compact design for easy transportation and storage, delivering convenience without compromising performance. Quality Assurance: Rigorously tested for high safety standards, offering peace of mind and reliability for continuous use. Features: 1、For MK8 extruder drive feeding kit can replace bad acrylic parts of CR？10, CR？10 S4, CR？10 S5. 2、Using special for Bowden tube connector, suitable for all 1.75 mm ments, strong adaptability. 3、Complete tools, you can operate it yourself, suitable for DIY enthusiasts. 4、Convenient to use and with good performance, with small size, easy to carry and store. 5、With strict quality control and quality assurance, high safety factor, can be used with peace of mind. Specification: Item Type: 3D Printer Parts 1. Mainly an improved version of CR11 full metal extruder for 3D printer accessories 2. The accessories have aluminum blocks and pneumatic connectors Size: Approx. 1.75mm / 0.1in Package List: 2 x Aluminum Block 1 x Spring 1 Package Screw Accessories Package List 2 x Aluminum Block 1 x Spring 1 Package Screw Accessories