Hidden in the side of the board, CAMO deck screws create a beautiful, fastener-free deck surface. Easy to install using either Marksman tool, CAMO secures deck boards directly to the joist to eliminate board movement, and they back out easily in the event a board needs to be replaced. No pre-drilling is required and boards won't split! CAMO deck screws come with a Limited Lifetime Warranty that guarantees against rust and corrosion for the life of the project.