A high quality 12v 40w ceramic cartridge heater suitable for use in hot ends on 99/9% of all 3D printers - the heater cartridge is 6mm in diameter and 20mm in length and is cased in stainless steel with a 1 metre (100cm) cable.
This is a UK made & tested replacement that also comes with a five year warranty
Perfect if your looking for a 12v heater cartridge cable replacement
You'll see others selling these but BEWARE there coming from China
This means no warranty and often also poorly made