4Pcs Copy Cutter 8MM DIY Carpentry Cutter Milling Tools with Top Bearing Shank Flush Trim Router

Shank Diameter: 8mm Cut Height: 25mm (1 ) Cut Diameter: 6.35mm 7.96mm 9.52mm 12.7 mm (1/4 5/16 3/8 1/2 ) with a bearing at the top end.