SBT's new line of painted showroom quality carts come with all the options:  6" casters with brakesLarger wall-thickness tubing throughoutReinforcement plates in critical locationsSpecial hardened paint and primer. The PWC cart is a welded and reinforced design that can easily handle up to 1200lbs This cart is 11" bunk height and 18" bunk width - great for larger hulls. Dealers:Shop carts are not eligible for Tier Level shipping discount. View Instructions to assemble your SBT Cart. SBT Shop Cart Assembly Instructions.