Description: DIY replacement kit universal for damaged 3D printer hot end, special for tA2 & A8 printer. Pre-wired NTC3950 thermistor, 100K ohm, 1.1m in length. 12V 40W 6*20mm cartridge heater. Aluminum heater block. 0.4mm output nozzle. 6mm diameter external thread extruder throat, 30mm length, suits for 1.75mm filament. Specification: NTC3950 Thermistor: Material: High Temperature Teflon(200) Resistance: at 25C=100K ohm Cable Length: Approx. 1.1m Working Temperature Range: -40~+300 M6 x30mm Extruder Throat: Material: Stainless Steel & Teflon Input Diameter: 1.75mm Length: 30mm External Thread Diameter: 6mm Threaded bore: one end diameter 4mm (hole size), deep 20mm, The other end of the hole diameter: 2mm (hole size), 10mm deep Screw diameter 6mm Plus Teflon tube: Long: 20mm Outside diameter: 4mm Inner diameter: 2mm Nozzle: Material: Brass Input Diameter: 1.75mm & 3mm Output Diameter: 0.4mm Heater: Material: Stainless Steel Voltage: 12v Power: 40w Wire Length: Approx. 1m Heater Block: Material: Aluminum Dimensions: 2 * 2 * 1cm / 0.8 * 0.8 * 0.4in(LWH) Suits for: A2 & A8 3D Printer Package Includes: 1xSet of Hot End