Keep your NCY GY6 Engine Case Boring Tool cutting sharp with these OEM replacement blades. Each blade features a cylindrical steel shank body with a brazed carbide cutting tip � purpose-built for boring standard GY6 engine cases to accept big bore cylinders. Delivers clean, precise cuts from 54mm up to 61mm, covering the most common GY6 big bore upgrade sizes. Sold as a set of 2.
