The snappy system starts with the quick chuck. This is fitted into a standard 3/8 inch key or keyless chuck. Six flats on the shank ensure precise location in the chuck. A sprung loaded outer sleeve makes it easy to remove attachments. This new chuck has an sds+ shank fitting for sds drills. Hammer action must be switched off when used. specification:. Sds+ shank quick chuck for 1/4 inch hex direct drive tools. alternatives::. Trend snappy quick chuck rubberised grip tr_snap/qcr. accessories::. Trend snappy quick chuck only tr_snap/qc. Trend snappy quick chuck long 3 tr_snap/qc 3. Trend snappy quick chuck rubberised grip tr_snap/qcr.