The APEX is the newest lock in the APEX Series and our first lock to use hardened steel links with our patented folding design. The lock offers uncompromising security at competitive 2.5 lbs (1.1kg) weight. The APEX uses the same innovative folding design as the APEX Ti but trades aerospace titanium for hardened steel. The package includes: One APEX, one newly designed APEX bicycle mount, four matching laser engraved high security disc detainer keys. All of our products are covered by our extensive warranty and 30 day trial.