Invisible Thread £1.49 Invisible thread, ideal for blind hemming clothes, curtains and can be put on the bobbin when sewing heading tape onto curtains and the pattern of the fabric means matching a colour difficult. Buy Now: Overlock Thread £2.99 Large thread cones for overlockers and industrial sewing machines. Comes in lengths of 5000m. Choice of 3 colours, white, ivory and black. Options: Please select ...WhiteIvoryBlack Buy Now: