For use exclusively with the Big Shot Pro Machine, the Adapter Pad is essential for cutting and embossing with Sizzix dies and embossing folders. The adapter should be used to cut any Sizzix Bigz Dies (up to 12” x 14”). The extended adapter is needed for any Bigz larger than this (up to 25”). When cutting using this adapter, the sandwich should be layered as follows - Sliding Tray, Adaptor Pad, Cutting Plate, Bigz Die, Material (Paper or Cardstock etc.), Cutting Plate. Thinlits dies require the Big Shot Pro Solo Platform, Shim & Wafer-Thin Die Adapter to be used within the Pro Machine.