These 900 mm (36 inches) Super Scrub replacement strands are for one change of strands only and include the forward-facing filaments.
Please see the manual on re-stranding the 600/900mm Super Scrub Head as it differs from the 300mm Super Scrub Heads. The heads contain nylon which aids the sweeping of flues and ducts cleanly. They are six-sided strands that generate flat sides to enhance the cleaning process. As the heads can turn clockwise and anti-clockwise, they can cover large and small chimneys with ease. The nylon strands can be replaced so the heads can be used for years to come, making them far more cost-effective than their brush replacement over time.
Furthermore, you only require a small selection of heads to cover all your cleaning needs saving you both space and time in choosing the right brush for the job. You no longer need to carry the vast range of brushes required by the old fashioned hand sweeping method. They also have the advantage of expanding to fit the chimney through centrifugal force, ensuring a far more extensive field of contact than the old brush system it replaces. The speed of the drill determines the force generated to clean the chimney. It is always advised to use low speeds in pre-1966 chimneys and always use battery power tools to safeguard yourself.