Dimensions: Strip brush overall height: 70 mm/2.75 inches; black bristles height: 50 mm/1.97 inches; Total length: 1 m/3.28 ft. You can cut it to any length as needed Material: The CNC vacuum brush is made of high-strength premium nylon, densely woven and thickened, non-shedding, with excellent craftsmanship, providing a longer service life Wide Applicable: The engraving machine dust cover is highly suitable for installation on the dust collection boards of CNC milling machine spindle motors and 3D printers. Vacuum accessories, engraving machine brushes Easy to use:Simply apply a layer of multi-purpose adhesive to the dust cover and the dust shoe brush, attach the brush, and wait for 2 to 3 hours for the installation to be complete Package Includes: You receive 2 pcs vacuum cleaner engraving machine dust cover. Colour:Black Material:nylon Package Contents: 2 * Dust Cover Brush Only the above package content, other products are not included. Note: Light reflection 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 +/- 1-3cm.