Colson® Series 2 General Utility Casters are ideal for many medium-duty applications. They are rated for loads up to 250-lbs per caster and are available in both swivel andrigid designs. All models feature: zinc plated finish, double ball hardened raceways and 3/8" axle. Wheel choices include: Performa Rubber, Polyolefin, and Hi-Tech Polyurethane. 2" wide tread width with capacities up to 250-lbs. Options: Caster mounting types available include various top plate sizes as well as a wide variety of optional stem mounting choices. Other options include brakes and wheel thread guards.