Holds hanks or skeins of yarn in place as you wind them into balls with a simple wooden table clamp. Holds skein in place securely without damaging your surface. The umbrella design fits the circumference of any skein. Made from durable beech wood. Laser etched with Milward logo. Instructions included. For best results use with the Milward Ball winder (2514212). Clamp suitable for table up to 4.5cm thick. Maximum skein circumference 165cm. Maximum open size: (d/w/h) 57 x 57 x 60cm. Closed size: (d/w/h) 10 x 10 x 60cm.