Sewing Machine -Serger Replacement Upper Lower Knife Highlights Generic Serger Replacement Upper Lower Knife Serger / Overedger upper knife XB0563-001 and lower knife X77683-001 Suitable for Brother PL1500, PL2000, 925D, 935D, 929D, 1034D and 1134DW Suitable for Viking 660CD and 680CD Made from high quality metal materials, strong and durable. Fits the Brother 1034D precision angle blade to ensure smooth sewing and a professional cut. Specification: Material: Steel Size Chart: 41x8mm/1.61x0.31inch 38x13mm/1.50x0.51inch Package includes: 1 set of serger blades Note: 1. Please allow slight error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you have a wonderful online shopping