3D printer enthusiasts, this is for you! This pack includes FIVE sets of replacement heating components. Each set has one 24V, 40W ceramic cartridge heater (6mm diameter, 20mm long) and one matching 100K NTC thermistor (3950 coefficient). The heaters have a stainless steel shell with a nickel-chromium alloy core for efficient heating. The thermistors are high-precision (±1%). The best part? They come with 1-meter long, high-temperature PTFE insulated wires already attached, ending in female pin connectors (1.25x2.0mm glass bead type), so they're basically plug-and-play. Compatible with many popular printers like Creality Ender 3, CR-10 series, Prusa, and more. Perfect for fixing a failed hotend, building a printer, or just having spares on hand. A must-have in your 3D printing repair kit.