The mono pre-tensioning tool anchor is produced in German standard and optimized designing by us. The materials are forging processing, adopt unique heat treatment process, make the mono anchor ring to obtain high surface hardness. The excellently high toughness mechanical properties, scientific tooth angle and vacuum carburizing heat treatment furnace to ensure of the wedges excellent properties and make sure that our mono anchor system can be repeated use of more than 1500 times. The most unique performance is that our mono anchor can be pulled back manually without any tools after stressing. This performance is far ahead of the domestic level and keeps pace with the performance of products made in Germany. The current specifications mainly consist of 0.5 and 0.6 inches.