T-3/4 Lamps - 0.090" (2,3 mm) Diameter

T-1 Lamps - 0.118" (3,0 mm) Diameter

T-1&1/4 Lamps - 0.160" (4,1 mm) Diameter

T-1&3/4 Lamp - 0.205" (5,2 mm) Diameter