The Build-A-Block Patchwork System Die Set from Gemini is perfect for creating fantastic patchwork projects.This set includes 18 dies that feature square, half square triangle and quarter square triangle dies that allow you to create a range of 3in, 4in, 6in, 8in, 9in and 12in sized blocks.Each metal die is 1.5mm deep and can cut through a multiple layers of varying materials with one movement. The dies include an accurate 0.25in seam allowance and the cut pieces are exactly the same size each time. Instructions and a block guide is included within the box.Please note: Some dies may have sharp points, edges or corners. Exhibit caution when using these dies and do not leave them unattended near children. Not intended for use by any child under the age of 14.Features & BenefitsIncludes 18 DiesFeatures quare, half square triangle and quarter square triangle diesCan cut through multiple layers of materialCreate beautiful patchwork projects SpecificationDie Size: 1in, 1.5in, 2in, 3in, 4in and 6inBlock Size: 3in, 4in, 6in, 8in, 9in and 12nDie Depth: 1.5mm