Vim Tools VIS108 Ball Torx Bit Set, 11 Piece T10 Thru T50, 1/4mag. driver & Bit Holder, Black Box. 11 piece set includes sizes: T10, T15, T20, T25, T27, T30, T40, T45, T50 and 1/4″ square drive bit holder and 1/4″ hex magnetic bit driver.