Strapping tapes are high tensile strength, easy to handle, sometimes reversible, strapping tapes for fast and high strength strapping. These composite or woven tapes are applied by tensioning and using special polyester strapping clips. When forming the strapping, these so-called strap clips, made of special steel wire, act as a fastener which closes at the same time as the strap is tensioned, so that the tensile strength parameters of the strap are maintained during strapping. The production dimensions of the buckles are adapted to the width of the straps used. Their use is intended to prevent possible slippage of the strap.