V6 Aluminum Extruder Hotend Block MK7 MK8 V6 Volvano Aluminum Heater Block For Extruder RepRap Prusa I3 Makerbot MK7 MK8 Replacement Part Suitable for filaments both 1., 75mm and 3., 0mm M6 Nozzle. Aluminum Heat Block E3D V6 great for MK7,MK8 extruder 3D printer hot end, it comes in the dimensions 20x16x12mm. Shop at now Inner hole for set screw: M6 and M3 (heat pipe and thermocouple) Inner hole for heater tube: 6mm Inner hole for thermocouple/thermistor: 3mm Material: Aluminum Color: Silver Plate thickness: 1., 0mm-10mm Output power: 15w(Max) Size: 20mm x 17., 8mm x 13., 8mm Weight: 8., 8g Package Content: 5 x Aluminum Heater Block Material: Made of high quality material Aluminum Alloy with sandblasting and oxidized treatment, sturdy in use Heater Block It works perfect with nozzle and nozzle throat. E3D V6 Prusa MK3(S) Hotend - Perfect Drop-in Replacement Heating block for the V6-J head 3D printer RepRap Makerbot MK7/MK8., Made of solid aluminum material, durable in use, high quality.