Description: 100% brand new, Never been tried or installed Part Name: Truck Bed Storage Box Location: Rear Driver (Left) Side Strong enough to hold 75 lbs. Color/Finish: Black Material: ABS Length: 35.8'' Width: 15.8" Height: 9.45'' Works With All Tonneau Covers Moisture Seal Keeps Contents Dry Lockable Lid Quick Release Latch Swings Out For Easy Tailgate Access Direct Replacement No instruction included Package Includes: 1X Storage Box w/ Installation Brackets As the picture shown Fitment: Compatible with 2019-2021 Chevy/GMC Silverado/Sierra 1500 For the year and models, please check the compatibility. Installation: Connect The Connection Bracket To The Side Mounting Bracket Fasten The Bracket To The Car Body With M8 Bolt And M8 Nuta And Make A Mark At Other Hole And Then Remove The Bracket And Drill Hole On The Mark Put The Rivet Nut Into The Hole And Faster The Bracket With Hand Nut Holder Fasten The Whole Bracket To The Car Body According To The Other Hold Put The Plastic Shaft Pin In Correct Position Put The Storage Box In Correct Position Installation Finish