Transform your gate system with these heavy-duty Cast Iron V-Groove Wheels, designed for smooth and reliable operation. Available in two sizes - 4-inch wheels supporting up to 600 lbs, or 6-inch wheels handling up to 1,000 lbs - these wheels are perfect for automatic driveway gates, private resident gates, and chain link rolling gates. Each set includes two V-Groove wheels, two wheel boxes, two axles, two nuts and grease fittings. The wheels feature a 2-inch width and 1-5/8 inch height to center axle. The 4-inch model has an overall measurement of 4-1/2 inches with the box, while the 6-inch version measures 6-1/2 inches. Installation is straightforward - the wheels are mounted on axles within the boxes for smooth rotation, with mounting holes for screws and a box design ready for welding to your gate. These robust wheels roll efficiently on angle iron tracks (not included), reducing the effort needed to move heavy gates while ensuring reliable, long-lasting performance.