Sports Dumbbell Spring Lockssuitable for Use At Home, In Several and All Commercial Fitness Equipment, for Men and Women Who Frequently Do Strength Training. Improve Your Balance, Your Coordination and Your Flexibility. Wide Range of Uses, Whether ItS Dumbbells, Squats, Bench Presses and So On, As Long As Your Fitness Equipment Is 25Mm / 1 Inch Bar Lifting, This Dumbbell Lock Can Help You Fix and Maintain A Stable Center of Gravity, Widely Used for The Home, Gym and More Outdoor Activities. Dumbbell Quick Release Press The Button to Quickly Open and Close. Once Closed, It Cannot Be Opened. It Only Opens with The Pressure of Your Fingers. Friendly Reminderthese Barbell Collars Are Designed for 25Mm / 1 Inch Bar and Not for The Threaded Rod.Please Confirm The Size of Your Gear Before Purchasing. Risk-Free Purchasethe Package Contains 6 Pieces of Barbell Clamps. or Are Dissatisfied with Our Dumbbell Clamps, Please Do Not Hesitate to Contact Us. We Will offer You The Best Service or 100% Refund of Your Money.