Compact bulb holder for 42 to 44mm long festoon bulbs with spade onnections and central mounting hole. 6.3mm spade connections at either end. Compact plastic body 17mm wide x 50mm long (exlcuding connection tabs). Total height 19mm. Minimum bulb contact diameter 7.5mm. Centre mountiing hole 3.5mm dimeter. Maximum incandescent bulb wattage 21W (noting LED festoon bulbs have a much lower power requirement than incandescent bulbs for a given brightness). Max temperature rating 130 deg C. Max intermittent temperature rating 180 deg C. Bulb not included.