Slice Engineering Copperhead™ Hotend 450°C temperature rating covers all printable thermoplastics Eliminates heat creep through Bimetallic Heat Break™ technology Versatile mounting options Adjustable z-height for dual extrusion setups Uses Rep Rap style nozzles (M6 x 1.0 threads with a 7 mm thread length and 12.5 mm overall length) Open source - published under a (CC-BY-SA 4.0) license What's Included: Heat Sink (If purchasing the Groove Mount or Screw Mount G2 Models) Mounting Hardware Heat Break Hot Block Should I get the Mosquito® or the Copperhead™? The Mosquito® and the Copperhead™ share Slice Engineering's Bimetallic Heat Break™ technology, are both designed for high performance applications, and are beautifully designed and machined in America; but the similarities end there. The Copperhead™ is a traditional style hotend aimed at reducing heat creep and improving high temperature performance. It is the more budget conscious option. The Mosquito® has a radical design featuring a protective roll cage around the most thermally efficient heat break (85%!) available on the market. It allows for cold, one handed nozzle changes. Both options improve performance, so the choice is yours! Click here to check out the Slice Engineering Mosquito® Hotend or the Slice Engineering Mosquito® Magnum Hotend Manufacturer's Part Number: Groove Mount - G2: B-CH-HO-0290-gro Screw Mount - G2: B-CH-HO-0289-scr Standard - G2: B-CH-HO-0291-sta RepRap 1.75: B-CH-HO-0292-repMK10: B-CH-HO-0294-mk1 C-E: B-CH-HO-0295-ceh C-Pro Max: B-CH-HO-0296-cpm