One80 R2 Interchange Darts – Steel Tip – Re-energizer – 23g. These straight barrels feature a combination of ring and micro-ring grips throughout the barrel making it suitable for a wide range of players. The gold titanium barrels also sport 2 black painted rings in the rear, completing the dart with a VICE shaft and R2 flight.One80 R2 Interchange Darts – Steel Tip – Re-energizer – 25g. These straight barrels feature a combination of ring and micro-ring grips throughout the barrel making it suitable for a wide range of players. The gold titanium barrels also sport 2 black painted rings in the rear, completing the dart with a VICE shaft and R2 flight.