Features: brand new and high quality This is an advanced upgrade kit for Ender 3 printers. Tried and tested upgrade kits can be installed quickly and easily, which can improve the performance and reliability of Ender 3 printers. High temperature silicone heated socks help improve the temperature stability of the hot end of the heating block. Silicone socks can also prevent heat from radiating to printed parts, and keeping heat away from printed parts will increase overload. This is essential to produce high-quality prints. Four bed spring compression end plane improve the rigidity and stability of bed printing The horizontal bed is the for key to producing high-quality prints. These improved stiffness flat end springs make your bed stay longer on the horizontal surface. Due to the increased length of these springs, you may need to adjust the end stop of the Z axis on some versions of the Ender 3 printer. Tl-smooth is a stepper motor driver add-on module, installed in the control board for case. One of the main reasons to install a TL straightener in Ender 3 is to reduce the "salmon skin" effect, which is evident on the surface of the printed material. They are mounted on the X and Y motor axes of the printer. Two high quality NEMA 17 electrical shocks, one for installation on the X stepper motor and the other for the Y stepper motor. This is the noise level of the 3D printer. Note that some Ender 3 models have push-fit pulleys. It's easy to check which version you are using. Specifications: Product Name: CR-10 Extruder Damper Kit Working temperature: 280 Working pressure: 280 Suitable for Ender 3, Ender 3 Pro 3d printer accessories Note: The color of the connecting line is random and cannot be selected or specified Material: silicone + aluminum alloy Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm. Package includes: 1Set x CR-10 Extruder Damper Kit