Rolson 20 piece micro hss pcb drill bit set 0 3 to 1 6mm rolson 48304 p these small diameter high speed steel hss titanium coated drill bits from rolson have straight shanks and are ideal for pcb manufacture p p the specially designed sliding topped box keeps the bits securely in place and dispenses only one bit at a time p rolson 48304 20pc micro hss drill bit set