Weight: 2x 12 kg. Progressive training with Sport-Thieme weight chains - When training with conventional weights, the load is always the same. With the Sport-Thieme weight chains, it's different: the load is variable. The higher the dumbbell is lifted, the more chain links are raised. This allows the athlete to achieve maximum force development with a high contraction speed throughout the entire movement. This can lead to an increase in maximum strength, especially in bench presses and squats. The training becomes more effective and dynamic. The chains are each 1.50 m long and are sold in pairs. Technical specifications: Lock ring diameter 50 mm, attachment type: lock ring with rotating knob, color: silver, outer material: chrome-plated steel, weight: 2x12 kg, chain length: 150 cm, filling material: steel, length of chain links: 11.5 cm.