This is fitted into a standard 3/8 inch key or keyless chuck. Trend Snappy attachments or any direct drive 1/4 inch hex bits can then 'snap' in effortlessly. Six flats on the shank ensure precise location in the chuck. A spring loaded outer sleeve makes it easy to remove attachments. Patent No. US5,398,946.
This is fitted into a standard 3/8 inch key or keyless chuck. Trend Snappy attachments or any direct drive 1/4 inch hex bits can then 'snap' in effortlessly. Six flats on the shank ensure precise location in the chuck. A spring loaded outer sleeve makes it easy to remove attachments. Patent No. US5,398,946.