Concrete Sturcture Accessories factory Category of Rebar Spacers Plastic Circular Spacer Plastic Circular Spacers (also known as Circulars, Wagon Wheels, Fastwheel Spacers or Wheels) is the most extensively used circular spacer for precast and on site concrete applications. Plastic Circular Spacers feature large clamping range for different diameters. http://www.thitco.com/building....-material/concrete-s
