Material: The ice hockey sharpening stone is made of high quality plastic and diamond, exquisite workmanship, durable and durable. Design: Maintenance and repair of damaged edges or blades again within 10 seconds and you don't need to take off the skates. Grinding stone and deburring grinding stone on 2 sides. Specification: The ice skate sharpening stone is about 7cm long and 4.5cm wide; Grinding stone diameter 12mm, length 35mm, coarse grinding 80 grit, fine grinding 400 grit. Advantage: The ice sharpening stone can effectively carry out daily maintenance of the ice blade. The operation is very simple and the grinding stone is durable. Usage: The ice sharpening stone is adjustable, suitable for most ice hockey skates and figure skating blade widths, light weight, easy to carry. Specification: Material: Diamond Size Chart: Total Size: 7x4.5cm/2.76x1.77in Grinding Stone Diameter: 12mm/0.47in, Length: 35mm/1.38in Package Includes: 1pc Ice Hockey Skate Grinding Stone Note: 1. Please allow slight error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping