Product Overview: - Toolbox Bracket To Be Used With A 21" Toolbox And Rack. Only To Be Used If A Rack Is Installed On The Truck Already And Adding A Toolbox. Made With Reinforced Steel Construction, Which Ensures High Strength And Rigidity, And A Protective Layer Of Black Powder Coat To Scratches, Chips, And Corrosion.Product Info: - Backrack Toolbox Brackets 21In Pair - Length (In.): 21.000 In.Manufacturer Part Number: - Manufacturer Part Number: 91010Product Features: - 2" Square Steel Frame Tubing Offers Maximum Strength And Rigidity - Durable Black Powder Coat Finish Provides A High Level Of Protection From Chips, Scratches And Corrosion - Horizontal Top Edge Is Designed For Easy Mounting Of Brackets To Hold Lights And Other Accessories - Frame Uses Factory Stake Pockets For Installation (Some Models May Also Require Drilling Into Side Bed Walls) - Useful For Carrying Ladders And Other Gear Too Long To Fit Into The Bed (Requires Rear Ladder Rack Rear Bar Sold Separately) - Protects Your Truck's Cab And Rear Window Against Impacts When Cargo In Your Bed May Slide Forward - Fully Compatible With Tonneau CoversGuarantees And Warranties: - 30-Day Satisfaction Guarantee - See Manufacturer's Website For Most Accurate Warranty Information.