SZX 75 Tim Holtz Bigz dies cut most substrates, including chipboard, mat board, several sheets of cardstock at one time, felt, fabric, and vinyl. The beige alterations dies are all discontinued. The on the edge dies are meant to cut the top of the paper, L dies are larger than Bigz, and the XL dies require extended cutting pads. You will need a die cut machine that will cut steel rule dies such as a Sizzix Big Shot, Big shot plus or Spellbinders Platinum Six, original Platinum. These will NOT work in a Gemini, Gina K intricut or Anna Griffin Empress/mini.