The Itty Bitty Double FLEX is the second iteration of the Clough42 Itty Bitty Double Extruder. This new version is designed to accomodate flexible filament and E3Dv6 hot ends.Key Features:- Designed for Hexagon or E3Dv6 hot ends on 27mm centers- Short, straight filament path to accommodate flexible materials- Uses the same hardware kit as the original Itty Bitty Double Extruder- NEMA 14 motors- Silent GT2 belt drives with printed pulleys- Integrated servo Z probe- Cam-lock idler bearing pins- Uses standard MakerFarm hobbed bolts- Lighter than a stock Accessible Extruder- Integrated hot end cooling- Mounting hardware for Prusa i3v printersA hardware kit is available: http://clough42.com/go/product/IBDE-HKFor required hardware, assembly instructions, firmware configuration and extruder calibration:  http://clough42.com/go/itty-bitty-double-flex