The orangey things that you put on your ruler... It's a thin piece of orange something that sticks to your ruler. The idea is you put it where you want to cut - like on the 2.5" line, then you line your fabric up and it butts against the orange thing. It was kinda cool at first, but after 2 uses, it lost its sticky. Supposedly it works with static electricity... I dunno, but even the ones I haven't used don't work.