These adaptors are CNC machined from alloy billets and will eradicate the issues of the original plastic block connections breaking. The Cam cover breather installs into the OEM barb (pull out the original and tap in the new). Once installed, these adaptors allow you to connect braided hose with Dash 10 (10an) fittings.
These are ideally suited for those wishing to redesign the breather installation or simply want to improve upon the original installation.