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
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.