Using the Aardwolf Double Forklift Boom is straightforward. First, make sure you're using it on an 8 - tonne or larger forklift truck. When removing marble or granite slab bundles from closed - top containers, insert the full length of the booms into the container and bring the load back to the fork mask. To hook the load, use the open hooks for flat web sling eyes. You can adjust the inner sliding hook on the forks to different holes for a quick distance adjustment, and use the connection bar to set the distance between the two forks according to the slab bundle size. As for maintenance, since it's powder - coated, it has good durability. But regularly check the boom extensions to ensure they don't get damaged and that they can't be pulled all the way out. Also, keep an eye on the open hooks and the inner sliding hook for any signs of wear. With proper use and maintenance, this boom will last you for many years.