Length:1-4mm,5-8mm color:grey,white Main use: brake block type:A-360,A4-30,A5-70,A5-60 Used: heat resistant , asbestos sheet Feature: 1.Main chemical content is SiO2,MgO,crystal water etc. 2.No magnetism,No conduction of electricity,Flame proof,Alkali proof. 3.Fiber is tough,tensile and soft with better luster and spinnability. Application: 1.It could be used in thermal insulation products. 2.It could be used in rubber products. 3.It could be used in brake products. 4.It could be used in electrical material. 5.It could be used in textile industry.