APS iBoard Running Boards (Nerf Bars | Side Steps | Step Bars) for 2007-2019 Toyota Tundra Double Cab Pickup 4-Door | (Black Powder Coated 4 inches) Innovative Patented iBoard Design Inspired by Smartphone Style, Deliver an Unique, Outstanding, Functional Appearance to your Vehicle. Massive 4 Inch Wide Solid One Piece Bars, Provides a Wider step area for Secure Footing. Polished 6061 Aircraft Aluminum Boards with Matte Black Power Coating, Best Rusting and Corrosion Resistance Compare to Other Brand Steel Bars on the Market. iBoard Surface Covered with Full Length, Premium Quality UV Resistant Non-Slip Rubber Pad. Easy DIY Rocker Panel Mount and custom fit for your: 2007-2019 Toyota Tundra Double Cab Pickup 4-Door