Smart Stix interchangeable circular needles are laser marked at 2cm intervals, allowing you to measure your creations on the go. They feature lustrous metallic shades specific to sizes and are made from high-quality, lightweight aluminum that is easy on the hands. Each needle has perfectly tapered points, ideal for all yarns and projects, with laser-printed sizes that do not rub off. Packaged in sustainable, FSC-certified recycled paper, these needles prioritize environmental protection.