Upgrade your sewing game with our New Spool Pins (2pc) 173571! Perfectly compatible with a wide range of SINGER models, including classics like 185, 1247, 1263, and many more. These durable pins ensure smooth thread flow and hassle-free sewing. Say goodbye to thread tangles and hello to seamless stitching. Also fits alternative part number 507139. Elevate your sewing experience today! ==== FEATURES: ==== Introducing the Ultimate Spool Pin Set for Your Singer Sewing Machine! Elevate your sewing experience with these meticulously crafted spool pins, designed to fit a range of Singer models including 6156, 6174, 6184, 7100, and 8700. Here's why our spool pins are a must-have for every sewing enthusiast: (A) **Perfect Fit and Compatibility**: Our spool pins are engineered to seamlessly integrate with your Singer sewing machine models 6156, 6174, 6184, 7100, and 8700. With precise measurements of 1 3/4" in length and 3/16" width (tapering to 5/32" at the tip), these pins ensure a snug and secure fit, eliminating any wobble or misalignment. Say goodbye to thread tangles and hello to smooth, uninterrupted sewing sessions! (B) **Durable and Reliable Construction**: Crafted from high-quality materials, these spool pins are built to withstand the rigors of frequent use. Whether you're a hobbyist or a professional, you can trust these pins to hold up under pressure. Their robust design ensures they won't bend or break, providing you with a reliable sewing companion for years to come. Invest in durability and enjoy peace of mind with every stitch. (C) **Enhanced Sewing Efficiency**: Featuring a dual-pin setup, our spool pins allow for greater versatility and efficiency in your sewing projects. Easily switch between different thread types and colors without the hassle of constant rethreading. This innovative design not only saves you time but also enhances your creative workflow, making it easier to bring your sewing visions to life. Maximize your productivity and let your creativity soar with our expertly designed spool pins. Upgrade your sewing toolkit with our premium spool pins and experience the perfect blend of precision, durability, and efficiency. Your Singer sewing machine deserves the best, and so do you!