AtomStack R6 Rotary RollerDescription: R6 features adjustable parallel rollers to securely hold and rotate cylindrical items, such as bottles and tumblers, ensuring smooth, precise engraving on curved surfaces. Applications: Regular Cylinders: R6 is designed for engraving standard cylindrical objects, like wine bottles, pipes, and other round containers. Uniform Diameter: During engraving, R6 requires the object to have a consistent diameter to ensure smooth and even rotation.