12 ADJUSTABLE WEIGHTS - 12 weight plates are included: 2.75lb x 4, 3.3lb x 4, 4.4lb x 4. Mix and match weight plates to create the ideal weight for your workout. Easily slide plates on dumbbells and barbell and secure in place with the durable 4 spinlock collars.FOR ALL FITNESS LEVELS - From beginner to advanced, the free weight set is user friendly and easy to manage for different levels of exercises. Adjust as needed to perform your workout without any complications. SLIP-RESISTANT & CUSHIONED - Designed for comfort, dumbbells provide stabilization with the rubber coated plates while the barbell's connecting rod gives the ultimate support for the individual to perform their best in their workout. Plus, your home gym will be set up for convenience and safety by the slip-resistant and cushioned attributes.