Trend Snappy 12.7mm diameter TCT countersink - with adjustable pilot drill. 12.7mm diameter countersink for up to 12 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 3.5mm diameter replaceable HSS (High Speed Steel) piloting drill for No10 screws in hardwood and No12 screws in softwood. 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/127T or SNAP/PC/12 Plug Cutters for applications where the fixings need to be hidden.