Guarantee a tight and secure plate fit on your barbell with the Body Power TITAN Competition Calibrated Collars. These collars are calibrated to within ±10g of their stated weight (within IWF and IPF standards, not certified), and are finished in hard chrome with laser cut logos. The two-piece design of these Competition Calibrated Collars incorporates a star locking ring that sits against the loaded plates and a lever on the main body of the collar, which when tightened together creates an unmovable level of plate security. Sold in pairs.