Features Superior Replacement Parts - Upgrade your 3D printing experience with a robust MK8 extruder drive feeding kit, designed to replace faulty acrylic components for reliable performance Versatile Compatibility - Engineered for use with all 1.75 mm filaments, this upgrade kit features a specialized Bowden tube connector that ensures strong adaptability to various setups DIY-Friendly Design - Complete with all necessary tools, this kit empowers DIY enthusiasts to easily install and customize their 3D printer extruder for enhanced functionality Compact and Portable - With a small size that makes it easy to carry and store, this extruder upgrade kit is designed for convenience without sacrificing performance Trusted Quality Assurance - Enjoy peace of mind with this kit, which features strict quality control measures and a high safety factor for reliable and secure operation 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