Add enjoyment to your piecing with perfectly marked corner dots and 1/4- inch allowances. This handy tool helps eliminate bulk by showing exactly where to trim dog ears. It also locates the intersection of two seams and thereby improves accuracy. You'll love how pieces fit together perfectly whether you're piecing by hand or machine. This package contains one Deluxe Corner Timmer & Hand Piecing Aid and instructions. Overall dimensions are 3-5/8x6-3/8 inches.