Clamps Sprockets are plastic consumable items designed to provide the necessary protective layer of concrete in the vertical plane of monolithic structures and in the production of concrete products in accordance with SNiP 52-01-2003 “Concrete and reinforced concrete structures. Basic Provisions ". The plastic elements for vertical reinforcement include an asterisk reinforcement retainer and a wheel retainer (round retainers). Sprockets are used to provide a protective layer for the reinforcement, circular clamps (wheels) are used to provide a protective layer for welded meshes. Application temperature (degrees Celsius) - from -40 degrees to +40 degrees.