SolarMate SolarHub HUBi Work 64 LED Bulb Lighting Kit For 64sq m SMH002-Bulb. This Hubi Work 64 kit is a variant to the standard Hubi Work 64 that uses 4 x LED Bulbs instead of 4 LED strips for the light source. Hubi Work is designed to be installed in a work place where mains quality lighting is needed but no grid supply exists.