The Threaded lifting socket system is a high-quality, low-cost method of carrying various types of concrete elements. The system includes a variety of sockets and accessories to accommodate most types of lifting applications. Threaded Lifting System for All Load Directions, Versatile lifting system for precast concrete pieces with a strong Rd-thread. Lifting inserts can be flush-mounted or recessed into the precast concrete piece. Lifting keys are screwed into the inserts and provide a secure connection to the crane. With its well-matched system components, the threaded lifting system provides safe solutions for any construction work.