*The sale price and retail price are the same due to the manufacturer's regulated pricing. This multi-sized ruler features easy to read black and white markings. The math required to cut these angles is incorporated into these markings. Use the 45 degree side to cut half-square triangles from fabric strips up to 5 1/2 inch wide. Create half-square triangles that finish up to 5 inch. Turn it around to cut 90 degree triangles that finish up to 5 inch. Our exclusive embedded gripper dots hold the fabric while cutting when pressure is applied. CGRMS4590 For more Creative Grids Rulers with FREE SHIPPING click on the link.