to the TECHNO-CENTER EBAYSHOP MICRO SOLDER BULB 12V (8-15V) ART. 21483-155 7 PIECE I.NSTRUMENT LIGHTING SOLDERING BULB DIMENSIONS approx .: D3 x 6.5mm USE AS LIGHTING BULBS IN CAR RADIOS, WORLD RECEIVERS, RADIO DEVICES and much more. FOR ILLUMINATING INSTRUMENT INDICATORS, SIGNAL INDICATORS, MODELING, REMOTE CONTROLLED RC VEHICLES and much more. >.