Item Type: Serger Thread Material: Polyester Product Specification: 2Pcs Application: Household Use Application Scope: Most Scenarios Product Size: Approx. 11.2 x 6 x 4.7cm / 4.41 x 2.36 x 1.85in (Manual Measurement, Slight Error May Exist) Package List 2 x Serger Thread 1Premium Polyester: These black serger sewing threads adopt premium polyester material, which is not easy to fade, fray and break. 2High Strength: These black serger sewing threads possess high tensile strength that can work smoothly on the sewing machine. 3Widely Used: These black serger sewing threads are suitable for daily quilting, serger, overlock, piecing, machine sewing, other hand sewing crafts, etc. 43000 Yards: Two black serger sewing threads are approximately 3000 yards long, which can meet your different needs. 5Practical Gift: These black serger sewing threads are suitable for your family, it's also great as a gift for your friends and family.