Works best with Spellbinders Platinum Die Cutting & Embossing Machine. Can be used with Spellbinders Contour Steel Rule Dies as well most etched dies and embossing folders. Clear plates enable you to see proper placement. Beveled edges allow better gripping by the machine when plates are feeding through. Clear for easy material placement Made with high quality polycarbonate Beveled edges for better machine grip. Approximate size is 6.1 x 8.7.