1. with high strength, high melting , chemical resistance, strong resistance; 2. Grinding the hyperboloid and concave-convex surface fully and uniformly; 3. High durability, resilient bristles, 't break off, absolute wear , and reduce the polishing time to equipment efficiency; 4.Good acid and resistance, resistance to chemical solvent, without destroying the original surface light solubility; 5. Low water absorption bristles, suitable for wet and dry grinding. Better use it adding some water, make the wire cooled to harder and more wear-resistent. 1. Suitable for surface finishing of woodworking, furniture, carved rosewood furniture, three plywood; the complex furniture's wood grain processing, concavo-convex surface grinding operation.Easy to use without polishing wax, because of the abrasives inside. 2. Also can be used for other materials, for deep holes deburring; surface grinding plating and coating; decontamination and grinding of copper plate in electronic circuit board; 3. Removal of burr and chamfering after machining; surface grinding of die-casting parts,etc. color: blue Material: Nylon Package Content: 4* Polishing and polishing brush Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.