Quality Materials: This stamp positioning tool is made of quality acrylic material, smooth surface, not easy to break or scratch. Metal hinges are stronger, to ensure that you can use for a long timeProduct Size: The inner size of this stamp positioning tool is about 11x15.5 CM, the outer size is about 15x19.5 CM, including 1 positioning part and 2 pieces of acrylic thin sheets, the size of each small square in the grid line is 5x5 mmUnique Design: This stamp positioning tool for the flip type aids, the stamping process just a flip and a close. Clear grid lines and measurements allow you to stamp more accurate, improve your efficiencyWide Applications: This stamp positioning tool is great for DIY designs on cards; clipboards; stamps; albums; notebooks and other craft projectsCreative Gift: This stamp positioning tool is a creative gift for arts and crafts loving family and friends on birthdays; holidays; parties, they will love itKey Feature:Easy to Clean: This stamp positioning tool is easy to clean with water, soap and towels, and should be rinsed before each use to maintain long term use.Product Name: Stamp PlatformSize: Inner Size: 11x15.5cm/4.33x6.1 inchOuter Size: 15x19.5cm/5.9x7.67 inchColour:transparentMaterial:AcrylicPackage Contents:1 x Stamp Platform set (Includes 1 Positioning Tool and 2 Acrylic Sheets)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.