Opens With Your Vehicle Ignition Key -- WORKS WITH 2015 & 2016 Chevy Colorado and GMC Canyon keys -- 2" Chrome Plated 5/16" Dia. Hardened Steel Shackle -- Weather Proof -- Double Ball Bearing Locking Mechanism -- Plate Tumbler Sidebar to Prevent Picking and Bumping -- Stainless Steel Lock Shutter to Keep Out Dirt and Moisture -- Limited Lifetime Warranty