【Easy Setup and Use】Ready to use after unpacking, Connect to laser engraving machine simply by replacing Y-axis terminal, no assembling needed, smaller size to better work with most laser engravers.

【8-level adjustable width】the engraving diameter can be as small as 4mm, provided 4 raised foot pad, height up to 100mm.

【All metal structure, Closed design】Safe and stable. One-piece rubber roller, hardness up to 70A, stronger friction, more stable engraving process. the motor is not exposed, safer. Roller protruding design, no obstruction, unlimited length of engraved objects.

【Perfectly matched with engraving machine to engrave round objects】The R3 One-piece rubber rotary roller, hardness up to 70A, stronger friction, allowing you to perform 360-degree engravings on round or cylindrical objects such as cups, bottles, pipes, bowls, drums and tubes and over-length plate engraving or cutting.

Kindly Reminder : there are two options, one for R3 pro , another one for R3 , please choose the right one you want before order .