APS IB-C4001A Sliver + Black iBoard Bolt Over for select Chevrolet Silverado 1500 HD Models Innovative Patented iBoard Design Inspired by iPhone 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. Hairline Texture Polished 6061 Aircraft Aluminum Boards, the Highest Standard of Rust and Corrosion Resistance. iBoard Surface Covered with Full Length, Premium Quality UV Resistant Non-Slip Rubber. Includes Both Passenger and Driver Side Boards, All Mounting Hardware and DIY Instruction.