Works with Singer 27/28/127/128 Type (Boat/Bullet Style)
Vibrating shuttle assembly with long metal bobbins for early straight-stitch domestic machines using the Whitehill vibrating shuttle system.
Many 27/127-style clones, including some Montgomery Ward models. And Monarch treadle machines.
Your machine must use:
• A long narrow bobbin (not round)
• A boat/bullet-shaped shuttle that rocks back and forth
• Length: 33 mm (1.30")
• Flange diameter: ~10 mm (0.39")
Please compare measurements before ordering.