We are offering hydraulic dock leveler features : 1)the width:6 feet, 7feet 2)the length:8 feet, 10 feet 3)the length of the lip board:400 mm 4)the adjustable heigth :+350mm, -300mm(for the 8 feet length) +450mm, -300mm(for the 10 feet length) 5)function:it can form a bridge between to dock and the vehicle, the different height of bed vehicle is also available , it enhances the effiency greatly.