Trend Snappy 9.5mm diameter TCT countersink - with adjustable pilot drill "9.5mm diameter countersink for up to 10 gauge Imperial screws. The perfect, fast swap accessory for clean, consistent finishes." TCT cutting tips for assured, long life performance in all timbers and abrasive timber based materials including ply, MDF and chipboard. Fitted with high quality 3.25mm diameter replaceable HSS (High Speed Steel) piloting drill for No 10 Imperial screws in softwood or No8 screws in hardwood. Easily adjustable drill length for different timber thicknesses and fast alignment. Can be used to make countersinks and can also be used for counterbores; ideal for use with Trend Snappy SNAP/PC/95T or SNAP/PC/38 Plug Cutters for applications where the fixings need to be hidden. Specifications • Shank Diameter: 1/4 hex • Dia Metric: 9.5 • Dia Imperial: 3/8 • Dia2 Metric: 3.25 • Dia2 Imperial: 1/8 • Type or Grade: For No.10 S/W