Please be kindly noted& 65292;the listed product is produced and distributed abroad and subject to the laws of its country of origin& 12290; Features: 1.No installation, no adjustment, ready to use after unpacking. 2.The diameter can be adjusted in 8 steps, and the engraving diameter can be as small as 4mm. 3.Roller protruding design, no obstruction, unlimited length of engraved objects. 4.Compatible with ATOMSTACK, NEJE, Ortur,Twotrees,etc. and applicable to 95% of engraving machines on the market. 5.Concentric design, adjustment-free timing belt,and the motor is not exposed, safer. 6.Engraving: longer cylinders, small diameter cylinders, over-length plate engraving, over-length plate cutting. Specifications: Material: Aluminum Alloy,303 Stainless Steel, Iron, Silicone,Plastic Power: 24W Item Size: 260 * 90 * 100mm / 10.2 * 3.5 * 3.9in Item Weight: 1.04KG / 2.3lbs Package Size: 29 * 19 * 13cm / 11.4 * 7.5 * 5.1in Package Weight: 1.586KG / 3.5lbs Packing List: 1 * Roller Axis of Rotation 4 * Auxiliary Heightening Columns