DetailsTool measures 3-1/2in square and makes 6in finished pinwheels. Includes table topper pattern. Durable thick acrylic with raised feet for easy placement and no slipping. Other available sizes include Midi Twister for 6-1/2in squares & Twister for 10in squares. Works with many Quilt Moments patterns, Around the Bobbin patterns, and Let’s Twist book series, plus many more twister friendly patterns on the market.