MaxaprinLaser Rotary Roller, Engraver Y-axis Rotary Roller Engraving Module for Engraving Cylindrical Objects Cans，Compatible with Most Engraving Machines

This appears to be meant for diode laser machines with the large gantry frames. I got this to work on a small K40 CO2 laser machine. I was modifying the machine and cut the bottom out. This will fit below the machine and allow larger cylinder objects to be engraved. So you don’t have to use a diode gantry set up.I recommend this rotary as it works well and can be used on other machines.