These candles fit the traditional Mason lamps that give a constant flame, there are two sizes of candle: candle 541 and candle 525.
Candle number 541 (110x30mm) has an approximate burn time of 12-14 hours. Some of the lamps that fit this candle no are: Victoria, Orion and Omega. In pack sizes of: 24, 48 & 200 candles.
Candle number 525 Slim cartridge candle (140 x 18mm) has an approximate burn time of 7 - 8 hours. Some of the lamps to fit this candle no include: Albert, Parisienne and Saturn. In pack sizes of: 25,48 & 480 candles.