High grade 3535 style 3W cool white on 16mm PCB

These LEDs have a maximum current of 1A and maximum power of 3W. Vf is typically 3V.

These are 6300-6500K cool white devices mounted on 16mm diameter aluminium PCBs, making them easy to use, while still being able to fit into small spaces. Of course, they must be mounted to a suitable heatsink.