Trend Professional 1/2In Shank Bearing Guided Pierce And Trim Cutter - 12.7Mm Diameter For Laminate Work12.7Mm Diameter X 30Mm Cutting Length Pierce And Trim Cutter For Flush Cutting Apertures In Worktops Cleanly.1/2In Shank Cutter Perfect For Heavy Duty Trimming Work To Bring Laminate Flush On Internal Apertures For Sinks Hobs And Other Similar Applications.Cutter Has A Piercing Tip To Drill Through The Laminate And Run Against The Work To Make The Cut In One Go For Fast Efficient And Clean Cutting.1/2In Shank For Use In Bigger Routers And Heavier Applications With 'K'mark Shank To Ensure Safe Working Practices.PTDTREDIR4740X12TC