Quart Mason Jar Wax Warmers. What a fabulous idea! These mason jar wax warmers feature electric light and punched metal wax warmer insert. You can use the jar as a light or remove the lid of the jar and place the punched tin wax warmer over the light bulb to melt your favorite wax tarts and melts. The punched tin design on the wax inserts will cast the lighted pattern around the room. This set includes one quart mason jar (approx 7.5″ tall”) light, tin wax insert in choice of design, 25 watt bulb. Should be used indoors only.