These lamps fit both Sentsy Wax Heaters and Better Homes and Gardens Heaters. Any heating pad that uses a G50 (i.e. 50mm, 2 inch) E-12 (candelabra) base. I use them in Walmart's Better Homes and Gardens wax heaters because they are matte and not as bright as the original bulbs. They melt the wax in exactly the same way as the original lamps, but dim the light coming through the heater. These bulbs are also very good, very glad I received them.