The GR8 light bulb base type is a 2 pin cap with 8mm between the pins. It’s used in low profile CFL lamps such as the 2D, PLQ, Dulux, BIax D, Lynx Q, and LED retrofit equivalents. GR8 bulb base types are found in recessed and surface mounted light fittings and used in utility areas, stairwells, corridors, bulkheads, bathrooms, and sports centres.