Features: Quick to assemble: Just replace the frame shaft of the ATOMSTACK S20 PRO/X20 PRO/A20 PRO engraving machine, you can get a large engraving area of 850x400mm, without purchasing any additional accessories to meet your large-area engraving needs. Directly Use: The extension shaft is standardized processing, it can be directly assembled on the S20 Pro laser engraver without any other additional processing. No need to purchase any additional accessories. High-precision profiles of the same color: The expansion kit adopts the metal profiles of the same color as the S20 PRO engraver, which expands the engraving area and ensures the stability and accuracy of the engraving machine. What you get: 2pcs Y-Axis Extension Axis, 1pcs 2.8m rubber belt, 1pc extension cord and a manual. Any problem, please contact our store without hesitation. Honor to serve you. Specification: Brand: ATOMSTACK Suitable for: S20 PRO/X20 PRO/A20 PRO Laser Engraver Y-Axis Extension Shaft Size: 1050mm Engraving Enlargement Size: 400x850mm Product Net Weight: 1.21Kg Package Size: 17.8 x 16.5 x 115cm/7 x 6.4 x 45.2in Package Weight: 2.85kg/6.28lb Packing List: 2 x Y-Axis Extension Axis 1 x Extension Cord 1 x Rubber Belt 1 x Manual