Knitter's Pride, 16" SmartStix Circular Needle: US 2.5 (3.0mm)
SmartStix are a knitting needle and ruler in one, as each one is laser marked at 1 inch intervals along both the needle and the cord. This makes measuring your gauge and project easier as you no longer have to search for your tape measure while knitting.
These lightweight aluminum needles are smooth to the touch and expertly tapered to the tip. They feature laser printed sizes, a smooth join and resilient cords that lay flat with no kink or twist.
This 16" length is widely used for child and adult hats, baby cardigans, sweater collars and other projects with a medium circumference.