Tired of slipping on those little slot-headed screws and ruining your freshly winded bobbin? Say no more. The new dual spacing bobbin safeguard sets itself over the bobbin allowing for a worry-free screw tightening and loosening experience.
An engraved acrylic top and a foam bottom ensures that you don't scratch your bobbin while using this jig.
As a little bonus, this tool also serves as a quick spacing checker.