REX Black Diamond is a wax based wet lube with wear resistant secret ingredients.
From user perspective, the Rex Black Diamond is an easy lube to live with. It does not attract dirt in the same way as oil based lubes do and it's easy to clean. This combo of features makes it easier to maintain the drivetrain between rides.
REX Products have been tested and compared to other lubes on the market by the Australian independent test lab, Zero Friction Cycling. Their procedure and data is open for everyone to study