Features 1、APPLICABLE MODEL: The radiator is compatible with for K1, K1 MAXimum 3D printers and is only applicable to a one piece throat ceramic heating head kit 2、LIGHTWEIGHT MATERIAL: The hotend heatsink is made of aluminum alloy material with excellent electrical conductivity, light weight and portable, making it suitable for your 3D printer 3、ACCURATE AND EFFECTIVE: Hotend heat sink adopt accurate casting, one piece molding. Efficient cooling upgrades for easy printing, provide great convenience 4、CONVENIENT AND PRACTICAL: For K1 Maximum 3D printer extruder cooling block adopts CNC accurate technology, side locking screw hole, easy to use 5、WITH FITTINGS: Aluminum hotend heat sink equipped with 2 screws, easy for you to install and use, complete accessories provide convenience to operate Specification Item Type: Hotend Heatsink Material: Aluminum alloy Size: Approx. 28 x 24 x 20mm / 1.1 x 0.94 x 0.79in Package List 1 x Heat Sink Block 2 x Screws