– Multi-mode Chuck and Roller Rotary. Comes with 3 sets of jaws including ladder jaws, L-shaped jaws, Hexagonal jaws – It can be used to engrave rings, spherical object, cups with handles or irregular items, etc. – Accurate And High Speed- Up to 6000mm/min engraving speed. Fine to 0.1mm engraving accuracy. 180° angle adjustable.