Harrows Blaze Darts – Inox Steel Darts. Blaze darts are precision engineered from Inox Steel, a high carbon, iron alloy. Includes: Supergrip Shafts, 100 Micron Marathon Flights, Hard Case.Harrows Blaze Darts – Inox Steel Darts. Blaze darts are precision engineered from Inox Steel, a high carbon, iron alloy. Includes: Supergrip Shafts, 100 Micron Marathon Flights, Hard Case.