Item4ever Monofilament Thread, Clear Invisible Transparent 100% Nylon (medium) DIA size: small=0.1mm, medium=0.2mm, large=0.3mm, x-large=0.4mm Monofilament Thread, Clear Invisible Transparent 100% Nylon This item is marked with the Item4ever brand. Our logo, brand, and slogan are all the intellectual property of ITEM FOREVER inc. This brand is registered with the US Patent and Trademark Office. we are the only authorized distributor of this brand on Amazon.