High
Speed steel drills let you drill ferrules to the size you need.
The set includes 0.35 mm, 0.4 mm, 0.5 mm, 0.7 mm, 0.8 mm, 1.0
mm and 1.2 mm drill bits and a pin vise.
Septa
Pick
C205465
This
is useful for removing small pieces of graphite ferrules from the
cap and fittings of column connectors; also removes pieces of septa
found in threads of the injection port.