Singer 27/28/127/128 Type
(Vibrating Shuttle Boat/Bullet Style)
Replacement long metal bobbins for vibrating shuttle sewing machines using the Whitehill system.
Singer 27, 28, 127, 128
Many Singer 27/127-style clones
Some Montgomery Ward vibrating shuttle models
Monarch treadle machines
Your machine must use:
A long narrow bobbin (NOT round)
A boat/bullet-style shuttle that rocks back and forth
Length: 33 mm (1.30″)
Flange diameter: ~10 mm (0.39″)
Center shaft: ~4 mm
Please measure your existing bobbin before ordering.
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