The york 6ft spinlock solid chrome bar is a chrome plated solid steel bar which comes with spinlock collars that help users quickly change the plates and also to add that extra bit of security and safety to the plates so they stay in place during use preventing the chances of injury and damage to equipment key features of the york 6ft spinlock solid chrome bar with collars chrome plated solid steel construction spinlock collars included to make plate changes quick and keep them secure lengt