These are used in the linkage that connects the servo horns to the swashplate, as well as the tail push rod assembly and the blade grip arm assembly.
SAB Goblin Plastic Landing Gear (500 Sport) [SABH0637-S]
SAB Goblin Plastic Landing Gear (2) [SABH1407-S]
SAB Goblin Plastic Landing Gear (White) (Kraken 580) [SABH1226-W-S]
SAB Goblin 2x4x3 Linkage Ball Set (6) [SABH0789-S]
SAB Goblin Tail Fin (Goblin 380 Buddy) [SABH1222-S]
SAB Goblin Helicopter Carbon Fiber Swashplate Antirotation H0401-S - Goblin 570