What's included 1 x Hit Fitness Clamp Collars | Pair 1 x Hit Fitness Power Strap | Cotton Neoprene Padded 1 x Hit Fitness Weight Bar Neck Pad 1. The Hit Fitness Clamp Collars are an alternative to spring collars. The easy to use click and lock mechanic will keep plates secure on barbell during lifts. They will reduce the damage to barbells which can occur during the sliding on and off of other traditional collars. These collars are the ideal choice for serious lifters during high impact training such as Crossfit, Olympic lifting and powerlifting. They are sold in pairs and are 2 inch in diameter. 2. The HIT Fitness Power Strapping gives weightlifters the added security when performing heavy lifts. The straps themselves are made from a durable cotton fiber while the wrist padding uses neoprene to ease tension on the bone from barbells. 3. Eliminate neck strain when lifting with the Hit Fitness Neck Pad. This high quality neck pad slots onto all Olympic straight bars.