Wheel Diameter: 4" (Click link to find similar sized casters)Tread Width: 1-1/4"Material: PhenolicLoad Rating (Per Item): 350 poundsFinish: ZincConnector Specs: Plate (3-1/8"x4-1/8"; holes: 1-3/4"x3" slots to 2-3/8"x3-3/8"; 3/8" bolt)Bearing: Steel SpannerLoad Height: 5-1/8"Swivel Radius: 4-5/16"Shipping Weight: 2.05 lbs.Usually Ships in: 24 hours (may be affected by quantity ordered)• Capacity up to 350 lbs. • Yoke is stamped and drawn from heavily embossed steel. • Case hardened double ball raceways provide extra capacity & durability • 1/2” king pin is hydraulically upset to increase shock absorbing capacity. • Large variety of fasteners for various applications. • Very durable, economical caster for hundreds of applications • Applications: Light-medium duty material handling equipment, food service carts & equipment, bakery racks & equipment, institutional carts & equipment, miscellaneous dollies, mobile cases, displays, mobile wire racking, stock carts, textile applications, warehouse & manufacturing applications, etc.