1、FINE WORKMANSHIP: The block is made of aluminum alloy, the insulation parts are made of stainless steel, and the nozzle is 0.4mm/1.75mm. All parts have undergone high accuracy processing. 2、HEATING ROD SIZE: The heating rod has a size of 6 x 20mm, 24V 40W with terminal XH2.54, with a total length of approximately 73mm 3、THERMISTOR: The thermistor rod has a size of 3 x 5.5mm, NTC100K B3950, upgraded version, can arrive 260 ℃, long term operation. 4、APPLICABLE MODEL: This hotend kit is suitable for End 3 S1 Sprite extruder. This material is designed specifically for Sprite Extruder standard kit at 260 ℃. 5、IDEAL REPLACEMENT: Wonderful replacement for the old and damaged parts, fine workmanship, attention to details, helps you improve the printing efficiency! Item Type: Heater Block Kit Material: Aluminum Alloy, Silicone, Stainless Steel Heating Rod: 24V 40W Heating Rod Size: Approx. 6 x 20mm / 0.24 x 0.79in Total Length With Terminal: Approx. 73mm / 2.87in Thermistor Rod: Approx. 3 x 5.5mm / 0.12 x 0.22in Features: High temperature printing below 260 ℃, ti alloy material can reduce heat conduction upwards. Nozzle Diameter: Approx. 0.4mm / 0.02in Suitable for End 3 S1 Sprite extruder 1 x Heating Aluminum Block 1 x Silicone Sleeve 2 x M2 x 18 Screws 2 x Plug 1 x Thermistor 1 x Heating Rod 1 x Nozzle 1 x Throat Tube