The Neomounts ABL-875 is a brake lock for the caster wheels of the FL50S-825 and FL55-875 trolleys. To prevent unwanted relocation of the trolley, the brake of the double caster wheels can be blocked using the ABL-875. The locks can be easily placed on the wheels of the trolley (padlock not included), preventing the brake from being released. The bright blue color is a clear reminder for the user that the wheel have been locked. The ABL-875 comes as a set of 2 brake locks.