Easy to use pen style cordless engraver. Ideal for model makers, crafters, and engravers. Quick keyless accessory change 2.3-2.4mm. Max: 13000 rpm no-load speed. Contents: 1 x mini engraver. 1 x micro USB cable. 2 x brass collets (2.4 & 3.2mm). 2 x diamond coated bits. 1 x tungsten rotary burr. 2 x aluminium oxide grinding wheels. 1 x sanding drum holder. 2 x sanding drums. 1 x nylon brush.