Aardwolf ARL series Rock Grapples are heavy-duty rock lifters which grip and lift boulders of almost any size and shape, when used with an overhead lifting device. Designed to function with a minimum of user effort, these boulder lifts automatically grip and release rocks. The heavier the rock, the greater the grip of the tongs. Model ARL800 lifts rocks weighing up to 1,653 LBS and has a grip range of 14" to 31". Model ARL1200 lifts boulders up to 3,307 LBS in weight, gripping rocks measuring between 23.6" and 47.2" wide. Aardwolf ARL series Rock Grapples are made out of high tensile welded steel for durability and a long service life.