With the Clearly Perfect Slotted Trimmers, you get two trimmers that make trimming half-square triangles a breeze. Designed for efficiency, this set lets you cut 11 different sizes with precision, so your blocks come together perfectly. A must-have addition to your quilting supplies! Step 1: Place the dashed line of the desired CUT size on the seam line of an unpressed half-square triangle. Step 2: With the rotary cutter, trim the two sides of the half square triangle. Step 3: Keep the trimmer in place. Trim the dog ears using the edge slots on each side that align with the chosen size. Trimming is now complete. Trims Multiple Sizes: Ruler trims 11 sizes of half-square triangles Streamlines the quilting process. Its multiple sizes eliminates the need for separate rulers for different block sizes, making it a convenient and efficient tool for quilters of all skill levels. Accurate Cutting with Minimal Effort: Designed for efficiency and precision, this ruler lets quilters align once and make two cuts to trim all four sides of half-square triangles. There is no need to rotate or realign during cutting. This method speeds up cutting time, ensuring every piece is square, uniform, and ready for assembly in your quilt designs. Exclusive Slotted Design: The slotted edge design removes dog ears while trimming, a common challenge in quilting. By eliminating this step, the trimmer improves accuracy in block assembly and saves time, making it easier for quilters to produce flawless, clean-cut quilt blocks. Versatile Quilting Tool for Various Techniques: This ruler isnt limited to half-square triangles; its also efficient for squaring hourglass blocks, strip piecing, and strip-tube methods. Its versatility makes it essential for quilters looking to expand their techniques and creativity. Durable Acrylic Construction with Easy-to-Follow Instructions: This clear, high quality, acrylic ruler is designed for longevity. It features printed instructions on the ruler, allowing quilters to follow cutting guides easily without needing separate instructions, improving efficiency.