This listing is for  Acrylic Template "5-Pointed Star"  72 Degree  for English Paper Piecing.

Acrylic fussy-cutting template for fabric cutting with seam allowance approx. from

6mm to 10mm depending on the size of pre-cut paper shapes. Thickness: 3mm.

So you always choose the same size and shape of pre-cut paper pieces to 

match the acrylic template