Package Include:1 x Pneumatic Engraving Polished Machine2 x Small Wrench1 x 3mm Chuck1 x 6mm Chuck1 x User ManualSpecifications:Features: - Durable and lightweight die cast aluminium body.- High-quality, spare parts are data processing, high accuracy.- Convenient one hand operation with safety trigger for easy and safety start.- Compact, lightweight design for easy maneuverability.- Good choice for smoothing sharp edges, deburring,polishing and grinding.- Professional grinder kit giving complete flexibility for most grinding and polishing needs.- Quick chuck design, chuck can be quickly converted between 3mm-6mm.- Lightweight and comfortable ergonomic design, suitable for hand-held homework- Self-locking switch, to achieve the start and stop tools, with insurance more secure design, will not be accidental injury- Non-slip handle, miniature body, matte non-slip handle, feel comfortable- Back-row design, will not blow on the ground material dust, excess lubricant will b