FriXion Ball Clicker 0.5mm – Set of 4 – 0.5 mm Pen Point Size – Refillable – Retractable – Assorted Gel-based Ink – 4 / Set Catalog Page: 737 General InformationManufacturer:Pilot CorporationManufacturer Part Number:BLFRT5P-S4Manufacturer Website Address:http://www.pilotpen.comBrand Name:FriXionProduct Line:Ball ClickerProduct Name:Ball Clicker 0.5mm – Set of 4Marketing Information: Write, Remove and Rewrite. New Retractable model with side clicking action! New thermo sensitive gel ink that disappears with friction using the rubber tail tip on the pen with no residue and no tearing of paper. No cap to remove to get to erasing tip! Smooth writing gel ink Available in fine and medium point This product is not recommended for signatures, examination papers or official documents. If pen is exposed to extreme temperatures (60C) , the ink will disappear. To restore color, cool to at least Packaged Quantity:4 / SetProduct Type:Gel PenProduct InformationPen Point Size:0.5 mmInk Type:Gel-basedInk Color:AssortedRefillable:YesRetractable:YesErasable:YesFeatures: Residue-free Temperature Resistant Ink Eraser Thermosensitive Ink Protective Cap Pocket Clip