Chunky 14mm ultra hardened steel shackle provides maximum cut resistance double rubber coating on crossbar ultra hardened reinforced crossbar anti rattle bumpers includes 5 laster cut keys 1 micro light and 4 extra grip keys micro light key projects a bright white beam the quattro bolt locking mechanism provides unequaled strength and maximum pull resistance by locking the cross bar to the shackle on 4 sides the new user friendly pick pull and drill resistant z key cylinder featurin