HIGH QUALITY: Made of high-quality stainless steel, this blade set is strong, durable, and built to last. It offers excellent corrosion resistance, with a smooth, burr-free finish for reliable performance. COMPATIBILITY: Designed to fit Brother Serger models PL1500, PL2000, 925D, 929D, 1034D, and 1134DW. Also compatible with Husqvarna Viking 660CD and 680CD overlocker models. Please verify your model before purchase. PERFECT SIZE: Upper blade measures 38 x 13 mm (1.49 x 0.51 inches). Lower blade measures 41 x 8 mm (1.61 x 0.31 inches). REPLACEMENT ACCESSORIES: Easy to install and use. Replacing worn upper and lower blades helps ensure smooth, clean fabric cutting. Ideal replacement for old or damaged blades. PRODUCT SPECIFICATIONS: Product Type: Overlocker Upper and Lower Blade Set Material: Metal Application: Sewing and overlocking machines Usage: Cutting component for overlocker machines Model Numbers: Upper Blade XB0563-001, Lower Blade X77683001 PACKAGE INCLUDES: 1 x Upper Overedge Knife 1 x Lower Overedge Knife WARNINGS: 1. Blade sharpness may diminish over time. Regular replacement is recommended for optimal performance. 2. Blades are sharp and lightweight. Handle with care to avoid injury and keep out of reach of children. 3. Dimensions are manually measured. Slight variations of up to 2mm may occur due to measurement methods. 4. Colors displayed may vary slightly due to monitor settings, though images are taken from actual products and color-corrected for accuracy. 5. If you have any questions, feel free to contact us for assistance.