Copkim 4 Shims 6'' x 9" Magnetic Shim with Card Size Grids Die Cutting Machine Accessories Black Embossing Machine Pads for Die Cutter

I really love these magnetic shims. My dies stay right where I put them and I can fit more on at a time now without worrying about them overlapping one another from moving out of place. I have a couple dies that I needed to add 3 sheets of cardstock below the shim to give it the correct thickness. Other than that these work like a charm and I am thrilled to have them. I will definitely keep these stocked.

This product was so thin it warped and folded after 2 uses. I had to send it back.

The dies really stay in place with these, but I couldn't crack the combination for the stack in my Sizzix Big Shot. Everything I tried either made them too thin to cut or too thick to roll through.