Upgrade your sewing game with our Pack of 20 Metal Drop-In Bobbins, perfect for Singer Cl 66, 99, 200, 300, 400, 500, 700, 800 series, and more! These top-quality bobbins (172222) feature four holes on each side, measuring 13/16" in diameter and 3/8" wide. Compatible with a wide range of Singer and White models, they ensure smooth, hassle-free stitching. Can't find your model? Contact us with your machine's details, and we'll find the perfect fit. Sew with confidence and precision! ==== FEATURES: ==== (A) **Universal Compatibility**: Our pack of 20 metal drop-in bobbins is meticulously engineered to fit a wide range of Singer sewing machines, including the Cl 66, 99, 200, 300, 400, 500, 700, 800, series 6100, 6500, 7100, and many other drop-in bobbin models. Whether you're a seasoned seamstress or a sewing novice, these bobbins ensure a seamless fit and smooth operation, making them the perfect addition to your sewing toolkit. (B) **Durable Craftsmanship**: Crafted from high-quality metal, these bobbins are built to withstand the rigors of frequent use. Unlike plastic alternatives, our metal bobbins offer superior durability and longevity, ensuring consistent performance and reliability. Say goodbye to frequent replacements and hello to a more efficient sewing experience with bobbins that are as tough as your creative spirit. (C) **Precision Winding**: Experience the joy of flawless stitches with our precision-engineered bobbins. Designed to provide even and consistent thread tension, these bobbins help you achieve professional-quality results every time. Whether you're working on delicate fabrics or heavy-duty materials, our bobbins ensure that your thread flows smoothly, reducing the risk of tangles and thread breaks. Elevate your sewing projects with the precision and reliability that only our metal drop-in bobbins can offer.