The 30389800 Ladder Rack Clamp ensures safe and easy transportation of most ladders on a motor vehicle, reducing the risk of theft and freeing up interior vehicle space. The simple aluminium hooks attach to your roof rack bars and the aluminium crossbar screws downward to your required height, clamping the ladders securely in place. Fits Ladder sections up to 0.38m wide.Features Can be used with a padlock (not supplied) for extra security. Fits ladder sections up to 0.38m wide. Supplied as a pair. Approx. 0.27m of adjustment.