John James Size 16 Tapestry needles are very chunky and you may struggle to use with wool on penelope or 10ct double mesh or finer canvas, more suited to lower count canvas. The blunt round point enables the sewing needle to pass and slip between fabrics and yarns without splitting or tearing the fibres. Use them with wool, embroidery soft cotton and stranded cotton on Single Point Canvas, Double Point Canvas, Aida and open mesh fabric. Size 16 contains 5 needles per pack.