1、Plug And Play: The machine is pre installed and is equipped with an adapter cable. It only needs to be connected to the X axes or Y axes stepper motor wiring of the laser engraving machine to engrave cylindrical objects, such as pens, vacuum cups, etc. 2、Large Engraving Area and 4 Heightening Feet: Roller chassis is designed to be lower and more stable, and is equipped with 4 sturdy metal heightening feet, so that it has a larger engraving area of 5‑150mm, which can meet more engraving needs. Metal feet are stronger than plastic feet and the machine is more stable when engraving. 3、Sliding Adjustment of the Distance Between the Rotating Shafts: Roller adjusts the space between the two shafts by sliding, and fixes the rotating shaft by turning the knob by hand, which is simpler and faster than the traditional multistage fixing hole adjustment. 4、High Accuracy Engraving: Rollers use high friction 70A rubber shafts to prevent slippage, and the linear speed of the rotating surface has been calculated, directly plug in the engraving machine cable to engrave the original image in 100% scale. The image will not be enlarged or reduced. 5、Extensive Compatibility: Roller is suitable for a variety of engraving software such as for lightburn or for laserGRBL, and can be used directly without setting parameters. In addition, it can be applied to 95% of engraving machines on the market such as for SCULPFUN, for NEJE, for Ortur, for ATOMSTACK, etc.