R & R Bikes manufactures Single Speed Ball Spacer Type Free Wheel. R & R Bikes has been awarded an ISO 9002 certification. Single Speed Ball Spacer Type Free Wheel is made from low carbon steel, accurately machined and carbonitrited to give a wear resistant surface, for smooth functioning and long life. Single Speed Ball Spacer Type Free Wheel is available in golden, bronze, silky, metal grey & black, nickel and zinc plated. Its threading is 1.370" X 24 TPI BSCY/M35 X 1mm.