Feature: 1. PRE INSTALLED FOR ENGRAVE: The laser roller engraving module comes with pre installed for easy setup. This kit is plug and play and can be used to engrave cylindrical objects such as pens and cups 2. FREE TO ADJUST: Ideal for most types of desktop laser engravers, where you can adjust the Z height or reposition the base to accommodate the required clearance for the rollers 3. WIDE COMPATIBILITY: Support for LaserGRBL, for LightBurn, etc., suitable for most desktop laser engravers. If you're not sure about compatibility, look at the stepper motor specific wiring diagrams below and check 4. ADJUSTABLE WIDTH RANGE: Laser rotary roller engraving module possess adjustable width for level 5, diameter 20mm‑80mm can be used 5. GASKETS WITH SCREWS: Adopt aluminum alloy gaskets and screws to combine, the overall appearance is more beautiful, very practical Specification: Item Type: Laser Rotary Roller Engraving Module Motor: No. 17 stepper motor Model: 17HS4401 Step Angle: 1,8° ± 0.09° Rated Voltage: DC 3.6V Rated Current: DC 1.5A per phase Holding Torsion: ≥420mN.M Maximum No Load Starling Frequency: ≥1900 PPS Weight: 255 g / 9 oz(approx.). Package List: 4 x Aluminum Alloy Gasket M38 x Aluminum Alloy Gasket M44 x Aluminum Alloy Gasket M52 x 2020 Profile L200mm4 x Flange Bearing2 x Rotary Drum4 x Timing Pulley Fixing Plate1 x Motor Side Plate1 x Side Board1 x 20 Teeth Synchronous Wheel Inner Hole 52 x 20 Tooth Synchronous Wheel Inner Hole 61 x No. 17 Stepping Motor 1 x Screw Nut Package1 x Tool Kit1 x Rubber Timing Belt1 x Motor Wire2 x Limit Ring1 x Idle Gear1 x User Manual Note: Peel off black film before use to provide adequate functionality.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.