Marker Pentel X100WL White Broad sold each 

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Chisel tipped point x100w-l

chisel white permanent markers pens

Valve-controlled marker for non-absorbent surfaces - e.g. rubber, glass etc.
White China clay pigment ink
Choice of tip styles for different applications including a fine point marker with interchangeable tips
The top white marker on the market
Available only in hang-sell