The Scubapro Dust Cap is an essential part of your regulator set! It keeps dust and water out of your regs. It's not only important to have your Scubapro Regulator Dust Cap in place when your regulators aren't being used, but also when cleaning your regulators after diving.
This dust cap ships with an insert and can be used for DIN (without the insert) or Yoke (with the insert).