Hobbed bar Hydra
Please meet Hydra: The hobbed bar that's got jaws.
You can use this bar as filament drive for Wade's extruder, or any other extruder using a hobbed bolt to drive the filament.
This bolt is engineered to spec with an enormous amount of grip. Slippage won't happen easily!
This item comes with an M8 locknut to keep your hobbed bar connected to the gears on your extruder.