OTOTEC 20Pcs Slotting Metal Bobbins Aluminium Alloy Sewing Machine Lock Cylinder Compatible with Pfaff Home and Industrial Models 21x8.8mm

[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 sewing results. [Complete Set of 20] Packaged with 20 groove shuttle cores, offering an ample supply for prolonged usage, ensuring consistent availability for replacements and uninterrupted sewing operations., Manufacturer: OTOTEC