P Series load capacities from 810 to 4, 400 lbs. and wheel diameters of 6", 8", 10" & 12" WP Series designed to accommodate wider wheels (3" tread width) - load capacities from 3, 965 to 4, 400 lbs. and wheel diameters of 8", 10" & 12" Swivel and rigid top plate models - alternatmore...