4 spools Overlock Yarn 4x5000 METERS - Polyester 100% 4 x 5000 meters Material: the use of polyester material high-strength line, with high strength, good elasticity, stitch smooth and beautiful, wear-resistant, low prices, rich colors, not fade, shrinkage, In many occasions, instead of cotton sewing thread. Come with sewing thread spool,this thread could fulfill most of your home...