The R ruler at the bottom of the first image is the actual item shown in image 2. [Size] Thickness: Approximately 2mm, Approximately 95 x Approximately 79mm (4 pieces) / Approximately 97 x Approximately 84mm (1 piece) [R Sizes] 5-10-15-20-25-30-35mm (4 pieces) / 10-12-15-20-25-30mm (1 piece) [Circle Diameter Sizes] 2.5-5-10-12.5mm (4 pieces) / 10-12-15-20-25-30mm (1 piece) [Pricking Iron Spacing] 3-3.38-3.85-4mm Leathercraft R Cutting Ruler Set of 5 (with pricking iron holes) Because it's transparent, the leather underneath is easy to see, and because it's made of acrylic, it can be used repeatedly. Please remove the protective film before use. *Instruction manual is not included.