Spindle diameter: 80mm(3.15inch), Vacuum port: 37mm / 1.45inch, please check the diameter of the router before choosing. Two-piece magnetic design: , and flexible for daily use and maintenance. Easy to assemble and install. Used to quickly remove sawdust and dust and keep the workbench clean and tidy. The product is made of high quality nylon with stable performance and is widely used in carving machines and woodworking machinery equipment. Suitable for 3018pro, 3018prover, 3018-m When the brush is worn out, it can be disassembled and re-glued with new bristles. colour: black Material: Metal+Plastic Size: Inner diameter: 80mm Package Contents: 1 x CNC spindle brush Only the above package content, other products are not included. Note: Light 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.