1、Compatibility Model: This hot end kit, featuring an upgraded threaded nozzle structure, which is detachable and individually replaceable, specifically designed for A1 and for A1 Mini 3D printers 2、Heating Block: Equipped with ni plated brass ti alloy heating block, it boasts excellent heat resisting, wear resisting performance, and a long service life, suitable for a variety of printing scenarios 3、Detachable Nozzle: The stainless steel nozzle offers higher thermal conductivity, strength, oxidation resisting, and a longer lifespan, supporting filament temperatures up to 320℃. Its detachable design facilitates easy replacement 4、User Friendly: The hot end extruder head allows for quick installation and removal. Both the heat sink and heater are integrated, with the heat sink back featuring magnetic mounting and dismounting for added convenience 5、Material Compatibility: This hotend kit is compatible with 1.75mm diameter filaments, suitable for printing PLA, ABS, PETG, TPU, PP, PC, Nylon, and other materials, ensuring a broad range of applications Item Type: Hot End Kit Material: Silicone, Stainless Steel, Ni Plated Brass Ti Alloy Filament Diameter: 1.75mm Installation Method: Thread Fixing Compatible Filament: PLA, ABS, PETG, TPU, PP, PC, Nylon, etc. Compatible Model: For A1, for A1 Mini Installation Method: Magnetic Installation Size: Approx. 16.5 x 21 x 49mm / 0.6 x 0.8 x 1.9in 1 x Hotend Kit 2 x Wrenches