Finish Line Gear Floss is the ultimate detailing tool! Perfect for cleaning your rear cassette, front chain rings, derailleur pulley wheels, hubs and spindles, brake arms, bottom bracket / crank interface, and more. Gear Floss is made of Microfiber. Microfibers work by attracting, removing and holding grime. Other materials simply move it around. Microfiber does this by capturing dirt, grease and particles inside its star-shaped grooves. Dirt is held deep inside the core of the fiber. Microfibers remove grime better than any other material known to man! Microfiber rope is highly tear-resistant and it is washable. Easy to Use! • Position floss between gears • Slide back and forth • Slide into other hard-to-clean areas like derailleur pulley wheels, hubs and spindles, brake arms, bottom brackets /crank interface, etc. Each Package Contains 20 Ropes Each Rope = 20” / 510mm Length