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This is a small cordless rotary tool built around a 3.6V lithium-ion battery and USB charging, sold with a large bit set: 30 grinding heads, three cutting discs, a 2.35mm shank post and two small drill bits. It is aimed at light etching, polishing and fine grinding on metal, wood, plastic, glass and ceramics, where a full-size rotary tool is too bulky. Its adjustable speed and pen-style grip give control for detail work, but at 3.6V it has far less torque than corded rotary tools and will stall on hard materials. Buyers should treat it as a hobby engraver, not a workshop grinder.
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This is a cordless engraving and grinding pen with a compact, ergonomic body. It is used for etching, polishing and fine grinding on metal, wood, plastic, glass and ceramics.
It runs on a rechargeable lithium-ion battery and charges over USB, so it needs no power cord. The speed is adjustable to suit the task. The kit includes grinding heads, cutting discs, drill bits and a shank post.
