Created from highly polished and radiantly colored birchwood, they are smooth to the touch for both hands and yarn. The polished wood surface of the hook ensures smooth effortless crocheting with no snagging or slippage. The easy to connect cable, with its smooth join, creates a Tunisian Crochet Hook that is perfect for a range of projects. The hooks attach to the KnitPro/Knitter's Pride interchangeable knitting needle cords.