Trend Snappy 12.7mm diameter countersink - with adjustable drill 12.7mm diameter countersink for up to 12 gauge Imperial screws. The perfect, fast swap accessory for clean, consistent finishes." Made from hardened tool steel for assured performance. Ideally suited to hard and softwoods alike." 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. Specifications • Shank Diameter: 1/4 hex • Dia Metric: 12.7 • Dia Imperial: 1/2 • Dia2 Metric: 3.5 • Dia2 Imperial: 9/64 • Type or Grade: For No.12 S/W