ITEM NAME:for Ender 3 Upgrade Kit Springs Extruder Sock Tube Stepper Dampers Heatsink K6T4 ☆★ Product Details ★☆ for Ender 3 Upgrade Kit Springs Extruder Sock Tube Stepper Dampers Heatsink K6T4 1.100% brand new 2.The extruder upgrade allows for more reliable filament feeding. 3.The two high temperature sock helps prevent heat readiating onto your print,keeping this heat away from your print allows for increased overhangs. 4.The four flat ended compression bed springs improve the rigidly and stability of the print bed. 5.The lead screw coupler improves the performance and reliability of your printer Z axis. colour:Photo Color Material:Aluminum alloy Package Contents: 1* aluminum extrusion machine 2* silicone sleeve(Random Color) 2* (0.4 mm) nozzle for 1.75 mm filament 1* pipe 4* flat end compression spring 2*NEMA 17 step damper 2* stepper motor radiator 1* screw hook Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.