EFFICIENT YARN ORGANIZATION: Manual yarn winder creates neat, uniform yarn cakes up to 4 oz, eliminating tangles and making your crocheting and knitting projects faster and more enjoyable SECURE CLAMP DESIGN: Attaches firmly to table edges up to 1.75 inches thick with non-slip silicone pads on bottom and bolts that protect your desktop from scratches while preventing wobbling during use DURABLE CONSTRUCTION: Made from high-quality ABS material for long-lasting durability with smooth, low-noise operation that ensures a peaceful and comfortable crafting experience