[US Direct] Extension kit for Atomstack S20 Pro/ A20 Pro/ X20 Pro Laser Engraver Expand The Engraving Area to 850x410mmExtension kit Features: Quickly and conveniently expand the engraving area: just replace the frame axis of the S20 Pro A20 Pro X20 Pro engraving machine, you can get a large engraving area of 850*410, no need to purchase any additional accessories, to meet your large area engraving needs High precision original profiles of the same color: the expansion kit adopts the original metal profiles of the same color as the S20 Pro A20 Pro X20 Pro of laser