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: black. 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 M and Express 775).