Quick Release Design The Dumbbell Clamps Are Designed With Quick Release And Locking Mechanisms Of The Barbell Collar Clips That You Can Easily Open And Close With One Finger. You Can Complete The Installation In A Very Short Time, Very Convenient And Not Slide During Use, Which Is Also Very Easy To Use. Widely Used Dumbbell Locks Are Designed comptiable with All Types Of Strength Training, From Circuitry And Drop Setting To Bodybuilding And Powerlifting. Suitable comptiable with Workouts, Overhead Press, Weight Lifting And More Sports, Widely Used comptiable with Home, Fitness And Outdoor Activities, Help Reduce Damage To Your Plates. What You Receive This Package Contains A Total Of 4 Non-Slip Barbell Clamps, Sufficient To Ensure Your Daily Use And Replacement, And To Effectively Secure Weights So That You Can Fully And Safely Enjoy Your Exercise. Good comptiable with Keeping Weights From Falling And Damaging Floors Or Carpets, Especially If You Are Exercising In Guest Rooms Or Offices. 100% Satisfaction Guarantee Our 1 Inch Barbell Collars Are Easy To Use. The Special Design Of The Collar Ensures That The Plate Is Securely Attached To The Rod. We Value Every Customer"S Shopping Experience. If You Have Any Problems Using Our Locking Plate Collar Clips, Please Contact Us. We Will Definitely Provide You With A Satisfactory Service. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks comptiable with your cooperation and we'll make you feel satisfied.