Features: Applicable to advertising carving machine, woodworking carving machine. The bristles are detachable, easy to install, and easy to set the knife. Thickening spindle brush, vacuum capacity. Used to quickly remove sawdust and dust and keep the workbench clean and tidy. When the brush is worn out, it can be disassembled and re-glued with new bristles. Specifications: 52mm material:acrylic, 65mm material:multi-layer board 80mm material:wooden board 775 motor 42mm: suitable for 775 motor Diameter 52mm: support 300w 500w spindle 775 motor Diameter 65mm: Support 1.5kw spindle Diameter 80mm: Support 2.2kw spindle Brush material: 3D printing Screw model: M4x8 Vacuum port diameter: 37mm Package Includes: 1x Spindle Brush note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.