The Gemini® A AO Type 27 Grinding Wheel is a cost-effective and dependable choice for smoothing welds and for stock removal applications. Use this versatile 1/4-inch-thick wheel with your right angle grinder at a 30-degree angle for offhand stock removal, weld smoothing and beveling a variety of metals, including stainless and hard and soft carbon steels. With an aluminum-oxide abrasive and a solid performance bond, this wheel delivers both a consistent cut rate and good wheel life.