Pattern calls for 50 g total of worsted weight yarn in two colors. No specific yarn or yardage given.
Description from pattern: “Easy to knit short rows are the key to this beautiful pinwheel pattern. Use it as a guest face cloth or under a vase or candle. There are also many variations possible. Use a thicker yarn and it makes a great pot holder or hot pad. Make it larger and you have knit a great rug.
The pattern was knit using two colors but it can be knit in one or many colors. The diameter is dependent on the gauge and the number of stitches you cast on.”