Creality Falcon Laser Rotary Roller for Laser Engraver【 Perfect for Cylinder Engraving】 The rotary roller module can be used for cylindrical objects, such as cans, peds, mugs, cups, bottles, pipes, bowls, guitars, drums and etc. 【Easy to Install and Use】Use LaserGRBL or LightBurn, the most popular paid carving software in the world and very easy to use. Supports Windows XP, 7, 8, 10, Mac OS, and Linux. Compatible with 95% laser engraving machines. 【7 Adjusted Diameters】 Rotating the engraving axis can increase the original engraving area,The diameter can be adjusted in 7 levels which meets the engraving needs of different angles. 【Durable & Reliable】 All-metal construction, sturdy and stable. The rubber roller with stronger friction to avoid sliding of engraved objects.