This diamond grinding flaring cup wheel is a must-have for any serious collector or lapidary enthusiast. With a 2” x 1” x 3/4” hole, it is perfect for grinding and flaring cups of all sizes. The diamond construction ensures durability and longevity, making it a great investment for any collection. Whether you're working with rocks, fossils, or minerals, this cup wheel is sure to make your lapidary projects a breeze.