21st Century"s Fiberglass Kerosene Heater Wicks are made of graphite coated fiberglass, a re-inforced cloth band and the highest quality cotton. Wick Model 100 fits Alladin B231,B331,J180,S471U,S481U, J480, HAPPY II, P320001, Everglow P-E1, P-E3, P-E12, Futura E-3 DUKE, FH-11 DUKE, Mega P-E1, PE3, Radiant King RK-55, RK-120, RK155, RK-220, RK-250, Toyokuni SOBJ, 101EU, TSK 23U, TSK 30E, TSK 100 80BJ TSK 608, Yuasa J35, SUNGLOW-100 and more. Contact us for a free cross reference chart..