Feature: 1. [360 DEGREE ENGRAVING] This laser rotating roller can help you to carve 360° on cylindrical objects, such as cans, bottles, tumblers, pens, etc. 2. [FLEXIBLE ADJUSTABLE] The rotary roller is 3 gear width adjustable from 0 to 30mm, the engraving length and diameter can be adjusted from 30 to 200mm. 3. [PRE ASSEMBLY] The rotating module is pre assembled, can be connected to laser engraving machine to use only by connecting Y axes terminal. 4. [WIDE COMPATIBILITY] This CNC rotary roller can be used with most laser engraving machines, easy to install and operate. 5. [HIGH PERFORMANCE] The rotary roller engraving module adopts upgraded motor, has high accuracy and stability. Specification: Item Type: Engraving Rotary Roller Material: PVC, Stainless Steel, Sponge, Rubber Engraving Roller Length: Approx. 195mm/7.7in Width Adjustment: 3 Gear, Approx. 0-30mm/0-1.2in Engraving Roller Diameter: Approx. 30-200mm/1.2-7.9in Motor Model: for NEMA17 Approx. 42x34mm/1.7x1.3in Function Structure Type: Roller rotation, chuck rotation, spherical engraving module, annular engraving stud. Package List: 1 x Engraving Rotary Roller1 x User Manual5 x Hex Wrench4 x Power Cord4 x Screw2 x Gasket1 x Terminal