Description Features： Maximum Strength Our aluminum barbell collars provide maximum security, outperforming traditional plastic collars. Ideal for CrossFit, Olympic lifts, strength training, and any workout with Olympic barbells. Easy Installation for 50mm Olympic Bars Designed for quick installation/release between plate changes on standard 50mm Olympic bars. The rubberized lining ensures a secure grip, making them reliable for any workout duration. Durable and Quick Lock Design Machined from robust aluminum, our lock collars are built to withstand thousands of uses in home gyms, commercial gyms, and group exercise environments. The one-click lock design ensures easy and fast installation/removal for maximum safety. Specifications:  Sold In Pairs Diameter: 50 mm Length: 85 mm Width: 38 mm Weight: 0.227 kg per pair 6061 Aircraft Grade Billet Aluminum construction, CNC machining Finish: Clear Hard Anodized Rubberized interior lining to protect the bar Dear customer, Our showroom is open 7 days a week. Opening hours: 10:00 – 17:00 on Mon-Sat. 11:00 – 15:00 on Sun. Our showroom is at 81 Mays Rd, Onehunga, Auckland 1061. Feel free to visit our showroom before you make your purchase : ) Pick-up is also available. Paid installation (with delivery included) available Only in Auckland. For more information, please get in touch with our customer service at 096220608 or by email at [email protected]. DB Fitness has stakeholders and suppliers who have been committed to fitness equipment for over 20 years. We carry a comprehensive product range in both residential and commercial equipment. Also, we offer a complete package, including the sale, delivery, service/maintenance, and ongoing support.