High grade tool steel bits, hardened for ultimate wear resistance. The bits have 1/4 inch hex shanks to fit the quick chuck. specification:. Mixed pack of bits. Pozidriv no.1. Pozidriv no.2. Pozidriv no.3. Shank diameter= 1/4 inch hex. alternatives::. Trend snappy pozi no 1 bit pack of 3 tr_snap/pz/1. Trend snappy pozi no 2 bit pack of 3 tr_snap/pz/2. Trend snappy pozi no 3 bit pack of 3 tr_snap/pz/3. accessories::. Trend snappy metal rack red tr_snap/rack/1. related products::. Trend snappy quick chuck only tr_snap/qc.