AOP Precast produced fixing socket with cross hole and nail plate with high grade seamless tube to ensure good quality. The fixing socket with cross hole and nail plate can directly nail to formwork. A reinforcement bar can inserted through the cross hole to guaranteed the fixing socket can fixed into the precast concrete. The largest bar diameter should be chosen that passes through the cross hole. 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.