SKU Spec Product Size (inch) Product Size (mm) Package Size (inch) Package Size (mm) Net Weight (lb) Net Weight (g) Gross Weight (lb) Gross Weight (g) ZHUMI-SI-HUL3JTV-30 30 7.71 × 6.63 × 6.61 195.83 × 168.40 × 167.89 15.55 × 12.20 × 10.23 394.97 × 309.88 × 259.84 30.00 13607.77 32.64 14805.26 ZHUMI-SI-HUL4JTV-50 50 9.29 × 7.84 × 7.83 235.97 × 199.14 × 198.88 17.91 × 16.14 × 11.61 454.91 × 409.96 × 294.89 50.00 22679.62 53.30 24176.42 ZHUMI-SI-HUL3JTV-45 45 9.29 × 7.84 × 7.83 235.97 × 199.14 × 198.88 18.11 × 14.56 × 11.02 459.99 × 369.82 × 279.91 45.00 20411.66 47.64 21608.13 Protective Surface The HDPE shell of this kettlebell set absorbs impact force, turning loud crashes into quiet thuds. Train anytime without disturbing your household. The protective coating also prevents floor scratches and dents, safeguarding your home. All-in-One Family Use With multiple precise weight options, everyone finds their fit. Kids and beginners start light, adults build strength, and fitness enthusiasts level up - one fitness set powers your family's health journey. Perfect For Exercise Large, permanent weight markings prevent workout mistakes. The wide, flat base stops accidental tipping and rolling, creating a safer environment for homes with children or pets. This kettlebell set can also be used outdoors. Wide Handle Featuring an ergonomic wide handle with a textured grip, this hard kettlebell set ensures a secure, comfortable hold for all hand sizes and exercise actions. This reduces wrist strain and boosts confidence during swings, presses, and carries. Sturdy and Long-lasting Materials The rust-proof HDPE exterior ensures easy maintenance. A solid high-density concrete core is engineered for lasting stability and perfect weight distribution. It prevents the workout equipment from deforming.