Hexagon Driver, Viking #411668901 & Needle Clamp Set Screw Wrench DetailsGuaranteed to fit Pfaff Serger Machine Models:

Coverlock 3.0, Coverlock 4.0

Guaranteed to fit Viking Serger Machine Models:

905 Huskylock, 910 Huskylock, 936 Huskylock, S21 Huskylock

These tool are pretty universal and would work for very small and medium sized hexagon screws. Very useful for replacing set screws. These are from a smoke free home. Please ask if you have any questions. They will shipped with a tracking number. Please checkout my other auctions as I have several sewing items listed. I’d be happy to combine shipping on multiple items. Thanks for looking!