Feature: 1. Cylindrical Object Carving: The rotary roller module can be used for cylindrical objects, such as cans, peds, mugs, cups, bottles, pipes, bowls, guitars, drums and etc. 2. Adjustable Width: The engraving diameter can be as small as 5mm and up to 200mm. Regardless of whether it is a large can or a small pen, it can achieve 360 degree rotation engraving, which can be used at longer cylinders, small diameter cylinders, over-length plate engraving, over length plate cutting. 3. Sturdy and Dependable: All metal construction, sturdy and stable. The rubber roller with stronger friction to avoid sliding of engraved objects. 4. Widely Compatibility: The rotating roller module is suitable for most engravers and 3D Printers. Compatible with for D6/T7 engraving machine, 12V power supply can be connected. 5. No Need for Installation: Rotary roller is ready to use out of the box without installation, adjusting the roller distance is a breeze, requiring no tools. You only need to connect the Y axis cable port of the engraving machine to engrave cylindrical objects, such as pens, water bottle, etc. Specification: Specifications: Material: Metal Maximum Load Capacity : 3kg Roller Diameter: 32mm Axis Distance: 36mm Power Line Interface Voltage:12-24V Item Size: 190 * 128 * 46mm / 7.48 * 5.03 * 1.81in Item Weight: 843g / 1.85lb . Package List: 1 * Rotary Roller 1 * Blue USB Cable (with driver, connect to driver board) 1 * 4 Pin (connected to the motor)