Trend Professional Slotting & Grooving Cutters Keyhole Cutter - 12.7mm Diameter Ref: 35/01X1/4TC Key Features: A keyhole recess for picture hanging flush to the wall. Ref. 35/0 - No.8 & No.10 screw heads. Ref. 35/01 - No.10 & No.12 screw heads Not suitable for grooving applications Specification: D: 12.7 mm (metric diameter) D2: 8 mm (metric diameter) C: 4.9 mm (metric cut length) S: 4.6 mm OL: 38.1 mm (overall length) Shank Diameter: 1/4 inch