Pop up location pins are another innovative feature, available on all OMNI ATC and entry-level CNC router tables. The pop-up pins are pneumatically activated to allow fast, repeatable placement of your cutting materials onto the machine. Pop up pins are the most reliable method of ensuring your materials are on straight, and with the full pneumatic retraction, there is no fear of any cutting tool collision with the pin. Visit @ https://bit.ly/2DEsz0C