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.
Dimensions:
Chuck dia=23 mm
Overall length=56 mm
Shank Diameter=3/8 hex
Shank Diameter: 3/8 hex
Diameter Metric: 23
Overall Length Metric: 56