12" - 1 3/4" CYLINDRICAL STEEL FURNACE BRUSH USA

The cylindrical shape fits my hand perfectly and makes scrubbing the furnace interior way less awkward than a flat brush. Bristles feel solid and haven’t shed a single strand after a few heavy uses.

I was skeptical about the cylindrical shape being useful, but it fits perfectly into the furnace tube and reaches spots my old brush couldn't. The 12-inch length gives me plenty of control, and the steel bristles have held up through a few heavy cleaning sessions already.

The bristles are stiff enough to scrape off caked-on debris without bending, and the cylindrical shape lets me roll it along the furnace tube for even coverage. I've already used it on two different surfaces and it's holding up well.