Renwick 16-in-1 Quick-adjust Dumbbell Set with Tray, Black

<p>It may be due to the asymmetrical installation of dumbbell plates at both ends or the bending deformation of the dumbbell bar itself, making the dumbbell prone to shaking and imbalance during use. Step1: Put the dumbbell in a safe, obstacle - free space for work.​ Step2: Remove Dumbbell Plates-Start from one end, take off each dumbbell plate carefully. Step3: Inspect Dumbbell Plates and Grooves​ Step4: Re - install Dumbbell Plates​ Align the first plate with the groove at one end of the bar and slide it in fully and centered. Install all plates this way, keeping the spacing even. Do the same for the other end, with the same number and weight of plates.​ Step5: Test Stability​ Hold the middle of the bar with both hands, lift the dumbbell, and let it hang. Feel for balance and check for shaking or tilting. You can also gently shake the dumbbell in different directions. A stable feel means the installation is better.​​</p>

• Specifications: Color: Black & Red; Materials: Steel, PP, PPR, ABS, Nylon; Assembled Dimensions: 18.5″ L × 9.5″ W × 9.5″ H; Package Includes: 1 Dumbbell Handle, 1 Tray, 10 Weight Plates
• Solid Metal Weight & Protective Covers: Crafted from solid steel plates, this adjustable dumbbell is designed for strength and durability. The polypropylene weight covers enhance water resistance and wear protection, ensuring it remains reliable and long-lasting
• 1 Hand, 1 Sec, 16 Weights: With this easily adjustable dumbbell, you can switch between 4 lb to 90 lb in seconds by twisting the non-slip selectorized handle clockwise or counterclockwise with one hand. Clear dials make adjustments easy
• Enhanced Safety With Dual Locking System: This adjustable dumbbell has a clever two-step weight plate locking system to keep your workouts stable, balanced, and safe. The weight adjustment only works when the dumbbell is on the tray, so no more accidental weight changes mid-lift