AMERICAN & EFIRD-Mettler: Metrosene Thread Gift Pack. Metrosene thread can be used on all fabrics and this fantastic color pack is sure to come in handy on all kinds of projects! It is easy-iron; shrink-proof; has high tensile strength; outstanding elasticity; and excellent smoothness. This package contains twenty-eight spools each with 150 meters of 100% polyester thread. Imported.