Diameter : 0.04mm or above Bundle Packaging : White crepe paper wrapping, PE tube packing or PE film wrapping. Spool Packing Specification: 20/40/80/100/110/200/220/300/350/400ends by spool, the number of ends can be customized Customized Funcation: anti-static,anion,antibacterial,anti-uv,flame retardant,etc. Application Area: nail polish brush,cosmetic brush,bowl brush,pot brush,bottle brush,strip brush,industrial brush,twisted wire brush,polishing brush,etc.