Mettler Seralon 100m Universal Sewing Thread 4000 Black Colour Code: 4000 £1.55 Quantity: at £1.55 each Add To Basket SERALON® 100% Polyester. Recommended and supplied with Bernina machines, Mettler Seralon is a universal polyester thread suitable for many sewing projects, including quilting and garment making. 100m Spool. Colour 4000 Black Length 100 m ART.-NR. 6677 No. 100 Linear density: ca. Nm 60/2 (dtex 168*2) Needle size: 80-90 Product Features: Ecology The threads are manufactured in line with international ecological specifications and certified in accordance with the Öko-Tex® Standard 100. Universal thread SERALON® can be used on all fabrics and seams. The thread is easy-iron, shrink-proof and offers great Color fastness. High tensile strength Provides greater seam strength, with no thread breakage and high chafe resistance. Optimal elasticity Outstanding elasticity, smooth seams and very easy to clean. Ideal smoothness No tension regulation required. Its optimal loop design gives a regular seam profile. High quality surface The tread feels silky and looks beautiful.