Mission Rebus Steel Tip Tungsten Darts - 90% Tungsten. Features: 90% Tungsten Barrels, 1 Set of Mission Flights, 1 Set of Mission Shafts with S-Lock rings, Point Protector. Mission Rebus Darts - Steel Tip - M3 - Linear Grip - 21g-D5410 - Grip Level 4 on these.