This multi shaped tool is extremely versatile and can be used with any style of machine. It is available in three sizes: small, medium, and large. The circle is 1 1/2", Square is 1 1/2", Triangle is 2 5/8", Hexagon is 1 1/2" , Oblong is 2 1/2" and leaf is 2 3/4". Attach a gripping aid to the bottom for more stability. For ideas on how to use the June ruler, check out the following link. June Ruler Tuturial