NEW box of 10 pcs Type 44 Incandescent lamps (Ten bulbs per box). 6.3VDC 0.25A (1.6W) T-3-1/4 type bulb with C2R filiment and BA9S Bayonet base. Maximum length of 1.19in and 0.43in (11mm) bulb diameter. Commonly used in Collins and Heathkit radio equipment. Visit our eBay store for other radio accessories.