We've been ranked among the top 100 most recognized brands in the world and are known as the place with the innovative hardware people. With the continued vision of being the best and most helpful hardware stores on the planet, Ace Hardware and its retail associates remain dedicated to the core value of quality for their customers. Aluminum Oxide Mounted Point Set, Assorted Shape, 30000 rpm, 3-Piece. Specifications 3-piece. Abrasive Material: Aluminum Oxide. Assorted Shape. Maximum Speed: 30000 rpm. Use: For cutting soft metals, wood, plastic, and more. Overall Length: 8.25 in. Shank Diameter: 1/4 in. Set includes 1 1/2 in. x 1/2 in. barrel, 1 1/4 in. x 1/2 in. ball end, and 1 1/8 in. arbor point mounted point. Weight: 0.04 lbs