The LMX53 Crossmaxx® Fast lock collar set (50 mm) can be used with all (smooth) Olympic bars with a 50 mm diameter. The LMX53 Crossmaxx® Fast lock collar set (50 mm) uses a unique slip-proof quick release mechanism to allow plates to be swapped and secured in a single motion. What’s more, these collars will not damage the Olympic bars.
The LMX53 Crossmaxx® Fast lock collar set (50 mm) is sold in sets of two pieces.

Weight: 370 grams per pair
Dimensions per collar: 7.6 x 8.9 x 5.0 cm
Material: nylon / rubber