Oracle Precast produced fixing socket with cross hole with high grade seamless tube to ensure fixing system work very well. A reinforcement bar can inserted through the cross hole to guaranteed the fixing socket can fixed into the precast concrete. Load capacity specified (in axial direction) is calculated for concrete compressive strength of 25 N/mm2. We recommend Socket Dowels only for fixings, for which a general technical approval is not necessary. To be able to transfer forces into the concrete a reinforcement bar is put through the cross hole. The largest bar diameter should be chosen that passes through the cross hole. The socket dowel can be nailed to the formwork by plastic nail plate or with a hexagonal bolt bolted through a hole in the formwork.