Kiya Whetstone Used once or twice. I have another one and don't use this one much, so I'm offering it to someone who will. Overall size is approximately 25.5 x 7.5 x 4.5 cm. The whetstone size is approximately 21 x 7 x 3 cm. The box and instructions have scratches and stains as shown in the photos. Thank you for your understanding.