Soft and supple, PETRA is a mercerized thread in 100% long staple cotton. Suitable for both knitting and crochet. Size 2.5 -3.00mm crochet hooks and 2.5-3.5mm knitting pins recommended. A 100g ball in attractive protective packaging. Available in 3 thicknesses and a range of 58 colours. Approx. 800 metres.