4 Piece Pin Vice Set Expert Quality For holding workpieces and small drills. Comprising four single ended collets with heavy knurled bodies Hollow for holding long items Capacities; 0-1.0mm, 0.8-1.5mm, 1.3-3.1mm and 3.0-4.8mm. Single ended pin vice to holding smaller diameter HSS drills. Use to slowly drill tiny holes in plastic, styrene etc. by hand with great control and precision. Railway modellers use this tool to drill holes for handrail wire and is useful for holding taps.