The 4-string basses are all equipped with Ernie Ball Super Slinky Bass strings (item # 2834) when they leave the factory. The gauges are 45w-65w-80w-100w.
The 5-string basses use the same with an added 130. This set is our Regular Slinky Bass 5's (item # 2836). The gauges are 45w-65w-80w-100w-130w.
The 6-string Bongo is equipped with our Slinky 6 String Bass set (item # 2838). The gauges are 32w-45w-65w-80w-100w-130w.