[Industrial Compatibility] Compatible with PFAFF industrial sewing machine models: 138, 234, 238, 331, 333, 335, 437, 438, 439, 463, 480, ensuring precise compatibility and seamless replacement for smooth sewing operations. [Aluminum Alloy Construction] Crafted from durable aluminum alloy, offering strength and longevity, providing reliable performance during extended sewing sessions in both industrial and household sewing machines. [Universal Sewing Machine Fit] Universally compatible with household and industrial sewing machines, Suitable for most shuttle core replacements of the same size. [Dimensional Specifications] Sized at 20.8x8.84mm with a 6mm aperture, designed for optimal stitching precision, contributing to high-quality and consistent sewin.
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