Spinlock Barbell, Collar Lock, Dumbbell Clips Clamp For Weight Lifting. Features: Made of Premium Nylon Material, More Durable. Easy to Use, One Hand Install ~ Spring Powered Snap-Latch Design to Keep You Safe. Perfect for CROSSFIT, Strong Lifts, Powerlifting, Weight Lifting, or Any Other Workout. Perfect for Cast Plate, Cast Grip Plate and Rubber Grip Plate. And Must for All Standard Home Gyms and Professional Gym Owners. Specifications: Type: Barbell Model Number: Barbell Locks Size: 30mm 25mm 28cm Type: Barbell Locks Material: Nylon Inner Diameter: 30mm Weight: 120g Suit For: Screw Type Bar and Smooth Type Bar Package Included:1 Pair 30mm Barbell Locks. We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.