R50 Ball Pentel is the original smooth writing rollerball with its tried and tested cushioned ball tip. Ball Pentel is still a firm favourite 40 years after its launch with its distinctive world-famous green barrel. Tried and tested cushioned ball tip and its smooth flowing water-based ink have become a benchmark over the years for effortless writing every day. R50 writes for up to 2200 metres. The R50 is made from at least 77% recycled material.