Harrows Rapide Steel Tip 90% Tungsten Darts. Features: 90% Tungsten Alloy, Harrows Rapide Flights, Harrows Supergrip Shafts, Hard Case. Harrows Rapide Darts – Steel Tip – Ringed – R2Harrows Rapide Steel Tip 90% Tungsten Darts. Features: 90% Tungsten Alloy, Harrows Rapide Flights, Harrows Supergrip Shafts, Hard Case.Harrows Rapide Steel Tip 90% Tungsten Darts. Features: 90% Tungsten Alloy, Harrows Rapide Flights, Harrows Supergrip Shafts, Hard Case.