• Base: PK22S with 1/4" tab • Halogen • Bulb Shape: T-3.25 • Model(s) This Part Fits: 040 & 046, ARISTOCRAT LIGHT, CHAYES LIGHT, DENTAL LAMPS & BULBS, LAMPS & BULBS, THE LIGHT, X-Calibur 046/BLU & BLW, X-Calibur 046/HLU & HLW, X-Calibur 047/BLC, X-Calibur 047/HLC, X-Calibur 048/BLT, X-Calibur 048/HLT, X-Calibur 049/BLPW, X-Calibur 049/HLPW