These ladder roof clamps provide a quick and easy way to secure ladders to car roof racks The Draper 24807 Ladder Car Roof Clamps are designed to quickly and easily secure ladders and steps to car roof racks. Quick and easy tool-free installation with lock holes for additional safety. Features: An easy way of securing ladders and steps to car roof racks The cross beams clamp ladders securely to the roof rack by simple spinner handles Quick and easy tool-free installation Lock holes for additional security if a padlock is required Specification: Net weight: 1kg