... -shape type legs,each leg adjustable for keeping the truck balance,large span leg,overall unit have Good Stabilityoperation ... speed and Hoisting speed adjustable by Hand acceleratorboom craneThis truck can select 8,10,12,15,20 tons craneother accessoriesWith ... on Truck body,side and rear protective net,free tools and instruction bookoptionalthis truck can select knuckle boom crane 8*4 TRUCK mounted ...