The LX range is a specially braided flat wick, this gives the wick the tendancy to curl when burning which keeps the tip of the wick in the hottest part of the flame, this helps to reduce smoking, carbon build up, also called 'mushrooming' and has a self trimming effect.
Wicks are all waxed and fitted with sustainers (paraffin wax). Higher the number the 'thicker' the wick. For natural waxes a larger wick may be required.
Sustainer measures 15mm x 6mm high.