PARTSMART SMR1816 Bulb, Miniature, T3 1/4 M BAY 13V .33A 3CP (Pack of 10) Single Contact Bayonet Base T-3 1/4 Average Life: 1000 Hrs. C-2V Filament Design Lead free ROHS compliant. OE Style and Design. This product is sold as a package of 10.