1 Pair 28mm 30mm Bodybuilding Spinlock Collars Barbell Lock Dumbell Clips Clamp Description: 100% brand new and high quality. 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 Locks Material: nylon Color:Black Inner diameter: 30mm Weight: 120g Suit for: Screw type bar and Smooth type Bar Package Included: 1 pair 30mm Barbell Locks Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3cm differences due to manual measurement. Product Advantages: Elastic rubber gasket is used inside the lock, when it is locked on the barbell bar, the elastic force of the gasket makes it stronger!