V-Groove Wheel Design: 4" X 2" Cast Iron V-groove Wheel with Weldable Heavy Duty Steel Box for Sliding Gates, specifically designed for V-tracks only High Load Capacity: 800lbs load capacity per wheel with durable Black Gloss Powder Coated finish for long-lasting protection Premium Bearing System: Machined Needle Roller Bearings ensure smooth and reliable operation for your sliding gate system Complete Hardware Included: Each wheel comes with 1/2" bolt and nut for easy installation and secure mounting Heavy Duty Weldable Box: Weldable Box measures 5" x 3" x 2.25" made from Uncoated Bare Steel for maximum strength and customization Complete Set: Package includes 1 pair (2 units) of wheels to support your sliding gate installation needs JM STEEL 4" Cast Iron V-groove Wheel with Weldable Heavy Duty Steel Box for Sliding Gates. 2" Width . 800lbs. Load Capacity. Machined Needle Roller Bearings. Uncoated Bear Steel. Include 1/2" bolt and nut. Black Gloss Powder Coated. 2 units.