Trend Keyhole Cutter 12.7mm Dia x 9.5mmc (Tct Router Cutter Range / Keyhole)
A keyhole recess for picture hanging flush to the wall.No.10 and 12 screw heads.Not suitable for grooving applications.Dimensions:Diameter: 12.7mmDiameter: 8mmCutting Length: 4.9mmS=4.6mmShank Diameter: 1/4 inch