Basix Birch Single Pointed NeedlesStraight single pointed needles in birch wood from KnitPro's Basix Birch series. The needles display the natural properties of birch, strength as well as the beautiful, the bright color of the birch tree. Birch straight single point needles are ideal for thicker yarns, as they slide more easily through the stitches without tangling the yarn. The needles are available in four lengths: 25cm (10"), 30 cm (12"), 35(14") and 40cm (16"), and in a wide range