Product Details Heat Sink Radiator Length: 27 mm Width: 22 mm Thick: 12 mm Package including : 1 x Bowden extrusion head kitSEL♥For＃J-head＃Hotend＃Extrusion＃Head＃Kit＃Assembled＃Extruder＃Kit＃For＃CR-8/CR-10