1. Suitable compatible with Ender 3 V2/3/3 Pro/5 CR-10 series/10S/20/20 Pro 3D printer model2. All-metal double-gear extruder-Instantly improve printing quality and reduce silky slip, locked between two threaded wheels through a double-gear rotation design. When squeezing at high speed or after shrinking, there is no need to skip steps.3. With this excellent design, the printing speed is faster, and it can inject more filaments into the hot end at the same time.4. PTFE is recognized as the highest quality PTFE tube in all 3D printing. Tight tolerances ensure that the filament directly triggers the hot end, with the smallest possible error space between the extruder and the hot end. perfect compatible with printing exotic filaments such as ABS, nylon and polycarbonate5. Simple operation, easy to fix, DIY suit, reliable quality, durableSpecification:Product name: Double pulley extruder kitBrass nozzle: 13 x 7mmPipe cutter: 78 x 26 x 26mmDouble pulley extruder: 42 x 25mm; 56 x 24 x 20mmApplicable models: suitable compatible with Ender 3 V2/3/3 Pro/5 CR-10 series/10S/20/20 ProColour:RedMaterial:ABS+metalPackage Contents:1 * CR10 double pulley extruder kit1 * pipe cutter1 * 1m PTFE tube4 * 1.75mm brass MK8 nozzle 0.4mmOnly 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.