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Descriptions: The sanding sponge is soft and flexible which has many different kinds of dimensions and has various applications in the family,industrial,and so on.It is excellent for fine processing of surfaces. Application: It is ideal for dry or wet sanding,which can be reusable after washing.It is used for special surfaces of metal,paint,wood,plastic by hand.It is high efficient for fine grit. Sponge density: High/Medium/Low Grains and grits: Coarse/Medium/Fine 36# to 400# Materials: Aluminium oxide/ Silicon carbide Size: 100x70x25mm, 125x70x25mm, 125x90x25mm,125x100x12mm, 140x115x5mm. Other specification according to your requirment.