Knight 4" Double Row Grinding Disc Cup Wheel

Diameter: 4 inches; double-row diamond segments for aggressive grinding; center mounting hole for easy attachment; includes a dust-shield to help limit debris.

The double-row configuration increases contact with the material, enabling faster material removal and a robust grind. It typically delivers quicker stock removal on hard surfaces, with a possibility of a coarser finish compared with single-row designs.

Best for concrete, stone, masonry, and other hard building surfaces. It’s not intended for steel or other non-concrete materials.

Mount the wheel onto a grinder with a compatible center hole/arbor, secure with the appropriate flange and nut, ensure the rotation direction is correct, and fit the guard before use.

Wear safety glasses or a face shield, a dust mask or respirator, and gloves. Keep the grinder’s guard in place, use steady passes with controlled feed, avoid overheating by taking breaks, and work away from flammable materials.

Inspect for cracks, missing or fractured segments, or excessive wear before use. Keep the wheel cool and free of debris, and store it in a dry place when not in use. Replace if you notice damage or significant wear.

Ideal for rapid removal of rough patches, leveling uneven edges, and preparing concrete or stone surfaces for polishing or finishing in commercial or DIY projects.

Alternative 1: Knight 4" Single Row Diamond Cup Wheel (https://fepy.com/product/knight-4-inch-single-row-diamond-cup-wheel) offers a finer finish with potentially slower material removal. Alternative 2: 4-Inch Diamond Cup Wheel Double Row General-Purpose (https://fepy.com/product/4-inch-diamond-cup-wheel-double-row-general-purpose) provides a similar double-row design with different segment geometry. The Knight Double Row is typically more aggressive than single-row, and may finish differently than other double-row variants depending on segment design; choose based on your surface and finish needs.

This wheel is designed for standard angle grinders with an appropriate arbor size and center hole. Check your grinder’s arbor compatibility and the wheel’s RPM rating to ensure safe operation.

Yes, you can review Fepy’s return options and timing for returns or exchanges. Make sure to follow the stated conditions to initiate a return if needed.

For frequent heavy grinding, the double-row design can increase productivity and reduce overall cycle times, often delivering good value by speeding up material removal and offering durable performance compared with some alternative cups. Compare it against other Fepy options to confirm the best fit for your project scope.