Terrafirma Rock Sliders With Tree Bars Protect your Land Rover from rocks and trees when you're off-roading with these Terrafirma rock sliders to suit a Defender 110. The steel box section sill offers protection from rocks and ground collisions, while the steel rail keeps the body away from immovable objects that will damage the side of your Land Rover. They also make a useful step for accessing the cab or reaching the roof rack. They are made from 80mm x 40mm x 3mm thick steel box section, with 42.5mmØ x 3mm wall thickness tubular rails. All fixings are heavy duty, in order to provide the strength needed to protect your vehicles body work, and they're strong enough to jack on if required. These replace the standard aluminium sill panels on your Defender, and fix securely .