Feature 1COMPATIBLE: For Ender 3 S1, for Ender 3 S1 PRO, for CR10 Smart Pro, for Sermoon V1, for Sermoon V1 pro 3D printers. 2SIZE: Heating rod size Approx. 6x20mm/0.24x0.8in diameter, 24V 40W with terminals XH2.54, total length with terminals Approx. 73mm/2.9in, thermistor rod size Approx. 3x5.5mm/0.12x0.22in, NTC100K B3950. 3HIGH ACCURACY MACHINING: The seats is made of aluminum, the heat shielding is made of stainless steel, and all parts are machined with high accuracy. 4SMOOTHLY AND STABLE: Heater block has smoothly inner hole and outer surfaces, which makes the extrusion of material more smoothly and stable, and it can work up to 260C for a long time. 5EASY INSTALLATION: Replace broken, damaged, cracked or unusable extruder heater block, easy installation, won't take you too much time.Item Type:ExtruderStandardHeaterBlockMaterial: ABS, MetalScope of Application: For ENDER3 S1/Sermoon V1 Printer .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x HeaterExtruderNozzle