Schneider Office Ballpoint Pen - Medium (Box of 20-50)Schneider Office Ballpoint Pen Medium (Box of 20 50) Ballpoint pen with slightly curved barrel feels pleasant in the hand when writing. With replaceable jumbo tipped refill Medium (M), waterproof according to ink standard ISO 12757 2. Matching barrel ink colour. Clip, decorative ring and push button made of metal. Thanks to the clever Plug+Play system, the Office pen can use a variety of refill formats (recommended refill Office 765). Black and Blue