Accurate Fit for 300U machines Looper 268382 is designed specifically for 300U sewing machines, ensuring smooth compatibility. Always verify your model number for exact fit. GradeA stainless steel construction Overlock looper is crafted from grade stainless steel for durability and consistent performance with everyday use. DIY installation for quick replacement Lower looper features a user friendly design with clear alignment guides for quick replacement without specialized help. Save up to 50 on mechanic fees with this easy to install part that takes just minutes to swap out. Performance and efficiency boost Upper looper increases stitching speed by 30 while maintaining tension control, making it ideal for home sewers tackling heavy fabrics like denim or frequent projects requiring polished finishes. Practical use scenarios Upgrading a 300U sewing machine for denim and other heavy fabrics to improve stitch speed and edge quality on daily projects. Regular home sewing tasks that require neat, professional looking overlock edges on garments and home textiles. Quick DIY replacement to reduce downtime and avoid mechanic visits on frequent maintenance or upgrades. Brand and compatibility notes Serrations align with the original specifications for 268382 and 300U machines, providing the intended function and performance without altering other components.