Features: This portable sharpener made of diamond stone material, double heart, 80 mesh, 200 mesh fine grinding maintenance edges. Standard: one side of the groove blades is 3mm, the other side of the slot blades is 4mm, inlaid millstone is 6mm in diameter Small size,easy to carry and storage. Sturdy,anti-corrosion and wear resistance. Ergonomic design,easy to use. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Type: Skating Blades Sharpener Size:Length:7.5cm Height:3.5cm Thickness:2.5cm Adjustable: If your cutter exceeds the two edges standard, you can adjust the sharpener in the following way. 1.Loosen the two screws. 2.Use common cards such as bank cards, shopping cards, membership cards, all cards with a thickness between 1.5 and 2 mm. Cut the corresponding size with scissors and insert them into the sides of the plastic card holder of the sharpener. 3.Adjust the width to fit the thickness of your blades. Tighten the screws to complete. Package List: 1x Sharpener