Feature: 1. No installation, no adjustment, to use after unpacking.2. Roller protruding design, no obstruction, length of objects.3. Applicable to 95% of engraving machines on the market.4. Concentric design, adjustment-free timing belt,and the motor is not exposed, .5. Engraving: cylinders, small diameter cylinders, over-length plate engraving, over-length plate cutting. ROUND SURFACESThis axis table attaches to your Laser-engraver machine, allowing you to 360-degree engravings on round or cylindrical objects such as cups, bottles, pipes, bowls, drums and tubes etc. It features an upgraded NEMA 17 made of corrosion-proof iron and aluminum.Width adjustment: 3 grades, 0 to 30mmEngraving cylinder diameter: 30~200mmEngraving cylinder length: 195mmMotor model number: NEMA17 42 x 34mmsize: 310 x 120mmMaterial: Acrylic+Metalcolour: BlackPackage Contents:1 x RollerOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.