... design for carver, engrave, rout. Grind, sharpen, sand, polish, drill and more 2. Unplug the tool form electric outlet before ... the collet wrench to loosen the collet nut. Insert the bit, and tighten the collet securely,. But avoid excess tightening ... : 160mm x 24mm Multi use: carving, engraving, routing, grinding, sharpening, sanding, polishing, drilling and so onOriginal box: YESPackaging size: 210 ...