Features: Material: Cemented carbide(alloy) Used for wood milling,trepanning more smooth,less noise. Sharp edge,high hardness,accurate positioning,high precision,smooth cutting,impact resistance,high toughness. Enable woodworkers to drill smooth bowl or tray on wood with a circular bottom. Selection of high quality alloy blade,make blade more sharp and durable. 　 Specifications： Cutter type: end-mill Total length: 63mm Blade width: 15.9mm Blade diameter: 28.6mm Shank diameter: 1/4"(6.35mm),1/2"(12.7mm),6mm,8mm Equipped with bearing and fixing ring(as photos show) At the trepanning,please wear good protective measures,in case of wood chips splash damage eyes. Quantity: 1 piece Package includes: 1 x End Milling Cutter