Hem height: 20mm; Total height: 70mm Roll length: 1 meter Brush cleaner is for CNC router spindle motor. Engraving machine brush. Color: Black Material: Plastic + Stainless Steel Package Included: 8 x 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 a little different from the real thing. The measurement allowed error is +/- 1-3 cm.