erasable double highlighter

erasable double highlighter,2 sides,what color you need erase pls inform me,this pen can be done discolor highlighter too.what color do you need discolor,pls inform me. Product Size:126*22*13.5mm Weight:18G Packing:1pc/poly bag,25pcs/box,500pcs/CTN Meas:57*28*16CM G.W/N.W.:10/9KGS ITEM NO:ART5020 BrandName:TENTA Meterial:Plastic Novelty:Yes Double highlighter pen: 1.Non-toxic and environmental friendly 2.Welcome customers Logos