Gary Robson Hybrid MK3 90% Tungsten Darts from Datadart. All Gary Robson 90% Tungsten darts are individually packaged and include a set of durable stems and a set of his very own flights.Gary Robson Hybrid MK3 90% Tungsten Darts from Datadart. All Gary Robson 90% Tungsten darts are individually packaged and include a set of durable stems and a set of his very own flights.Gary Robson Hybrid MK3 90% Tungsten Darts from Datadart. All Gary Robson 90% Tungsten darts are individually packaged and include a set of durable stems and a set of his very own flights.