FireUp 15cm Poly/Steel Strap Pro Black Flue Brush (6" Dia.)If you want a high quality, long lasting brush head & then you need the PROFESSIONAL KIT. The strong Polypropylene Nylon bristles are twisted into a 10mm steel strap. Each brush has an end loop for PULL THROUGH applications, and a 1 2 BSW fitting for the poles. These brushes are very good at creosote removal, without scratching the inside of your flue. They attach to heavy duty 19mm dia polypropylene rods with brass end fittings. Imported from the UK