This 12,000 pound capacity Rocklift has three tines to grab onto irregular shapes such as stone, boulders or piles of debris The MG12K24T60V4 Rocklift features three points of contact to safely lift irregular shaped objects such as rock. Three curved arms extend down from the body to allow the lifter to grip securely. The heavier the object being lifted, the tighter the grip. The MG12000 has a 12,000 pound capacity and a 24" to 60" gripping diameter. ROCKLIFT SPECIFICATIONS MODEL WEIGHT CAPACITY GRIP RANGE HEIGHT MG3000 160 lbs72.5748 kg 3000 lbs1360.777 kg 0 - 30 inches0 - 76.2 cm 74.38 inches188.91 cm MG6000 325 lbs147.418 kg 6000 lbs2721.554 kg 15- 40 inches38.1 - 101.6 cm 102 inches259.08 cm MG12000 880 lbs399.161 kg 12000 lbs5443.108 kg 24 - 60 inches60.96 - 152.4 cm 147 inches373.38 cm