Relentless 90% Tungsten Steel Tip Darts by Performance DartsKeep hitting those high scores and doubles with this fantastic new set of Performance Darts! Our trademark micro grip at the front end of the barrel fuses with some wider, deeper grooved sections with further micro grip right at the back, providing an effective level of grip across the whole dart. This diverse all over grip pattern will suit a lot of throwing styles and the sure fire control you get will help you in your relentless pursuit of darting