Amazon.com: Sculpfun Extension Kit, Extend The Working Area of S30, S30 Pro and S30 Pro Max Laser Engraver to 935x400mm(36.8"X16.14") for Larger and Longer Laser Engraving and Cutting, High Accuracy & Stability :
Sculpfun S9 Z Axis Adjuster Raise & Lower Your Laser Module - Etsy
SCULPFUN S10 Engraving Laser Module S9 10W with High Speed Air Assist Eye Protection for S9/S6pro/S6 ATOMSTACK A5/A5Pro ORTUR - AliExpress