Features: DIY replacement kit universal for damaged 3D printer hot end, special for Anet A2 & 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. Specifications: --NTC3950 Thermistor Material: High Temperature Teflon(200 ) Resistance: at 25°C=100K ohm Cable Length: Approx. 1.1m Working Temperature Range: -40 +300 ------- --Extruder Throat Material: Stainless Steel & Teflon Input Diameter: 1.75mm Length: 30mm External Thread Diameter: 6mm ------- --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) Item Weight: 8g / 0.3oz Suits for: Anet A2 & A8 3D Printer Package Size: 10 * 4 * 3cm / 3.9 * 1.6 * 1.2in Package Weight: 41g / 1.5oz Package List: 1 * Set of Hot End Note: Please pay attention to the parameter before placing an order.