Harrows Supergrip Black Darts - Steel TipHarrows Supergrip Black Darts Steel Tip 26g. The much loved Supergrip 90% dart has been given a striking new look. Although all the dart specifications remain the same as the original Supergrip 90%, the barrel has been coated with durable black titanium nitride. The barrel is front loaded and features a distinctive combination of ring grips along the entire length. As the name suggests, the grip level on these darts is very high, perfect for