AOP Precast produced high quality lifting socket with double sided which is a popular products in oceanic countries for threaded lifting system. The lifting socket with double sided have a cross hole with thread on both sides. Each side has plastic caps to prevent dirty and concrete into threads of sockets. The reinforcement rebar can cross through middle hole to fixing the sockets into concrete. There have two sides to lifting solution with thin precast concrete wall panel or precast concrete culvert. AOP lifting socket with double sided can maximum load capacity over 12.5 ton. The metric and RD thread are available.