Features 1、Applicable Model: This hotend heatsink is specifically designed for K1 and for K1 Maximum 3D printers, exclusively compatible with one piece type heatbreak ceramic heating block set 2、Aluminum Alloy Construction: Crafted from sturdy aluminum alloy material, this extruder heat sink boasts excellent electrical conductivity, rapid heat dissipation, and has a long service life 3、Integrated Precise Cast: Featuring precise casting and a one piece molded structure, this 3D printer extruder heatsink delivers consistent printing performance and long lasting durability 4、Compact and Lightweight: The aluminum alloy material ensures that the extruder heat sink is compact and lightweight, with sturdy structure, facilitating easy installation in your 3D printer 5、Replacement Part: Seamlessly replace worn out or damaged cooling blocks to ensure secure and stable running of your 3D printer extruder, maintaining consistent printing performance Specification Item Type: Extruder Heat Sink Material: Aluminum Alloy Size: Approx. 28 x 24 x 20mm / 1.1 x 0.9 x 0.8in Package List 1 x Extruder Heat Sink