Size 5.75inch， 16cm<br />japan top 400C steel Material<br />62HRC Hardness <br />8 teeth， 50-55% thinning rate<br />14 teeth， 40-45% thinning rate<br />18 teeth， 30-35% thinning rate<br />Please leave a note which one do you want when make your order， or 8 teeth item will be sent