Bondtech is a swedish design and manufactiring company that specialises in dual drive extruders. That means the filament is driven by gears on both sides of the filament instead of one. Their housings are manufactured with SLS nylon making them super light compared to their metal competitors. These and other features position Bondtech as the gold standard in extruder technology. Check out Bondtech's specific 3D printer upgrade kits or browse their range of universal extruders below.