The 30W E3D High precision cartridge offers many small but greatly beneficial advancements over the already first class standard cartridge heaters supplied with E3D hotends. A high tolerance canister better makes for better surface engagement with the hotend heater block in turn increasing the thermal efficiency. The cable of the cartridge heater is now detachable through a molex connector, allowing the hotend to be removed without disrupting the cable routing. The included cable comes with crimped ferrules at the input end to provided a neater and safer connection to 3D printer electronics.