Suitable for loads at a maximum of 325 pounds, this light to medium-duty caster has a brake mechanism for added control. The four-inch diameter wheel with a tread width of 1 1/2 inches is made of performa for a quiet, impact-resistant roll while staying durable and resistant against water, debris and other chemicals. Has a four-inch long and 4 1/2-inch wide mounting plate with a bolt diameter of 3/8 inches.