Total Length Of Cylinder Brush:Can Be Customized Cylinder Brush Gap size:Can Be Customized Cylinder Brush Outer Diameter:Can Be Customized Cylinder Brush Inner Diameter:Minimum 4 mm, The Largest Customizable Brush Filament:Plastic Filament, Abrasive Filament, Animal Hair, Metal Filament, Plant Fiber Strip Brush Bottom Width:2.5mm - 13mm Strip Brush Bottom Metal Material:Tinplate, Stainless Steel