Special for engraving machine. Thick nylon brush, lint-free. Effective dust removal for engraving machine. Spindle: 100mm/3.94inch Color: white Material: plastic + nylon + metal Package Contents: 1 x Dust Brush 1 x Wrench Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.