LIFT HEAVY AND TRAIN HARDER! Sunny Health & Fitness No. 076 Shark Clamp Lock Collars help you lift heavier without the hindrance of moving weight. Unstable weight can take away the effectiveness of your workout. Feel the stability and security when lifting rubber, technique, training, competition, and powerlifting bumper plates. Don't just move the weight… feel the muscle and make every set and rep count with Sunny’s Shark Clamp.