10 PACK – Blank Insert F Type Coax Connector for Keystone Wall Plate White The snap-in Blank insert allows for coaxial / RCA cable runs to pass through a finished opening. You can also attach an F style connector to the blank allowing you to connect all types of equipment cords and cables with ease and simplicity.They snap in and out of the wall plates without the use of special tools. Insert Type: F-Type Blank. Strong & Durable Construction for Long-Lasting use These Cost-effective 10-Pack commercial grade keystone jack inserts are engineered for frequent use and built to last. Quick & Secure Snap-In Installation Install a multi-port keystone jack wall plate to plan for expansion. Prevent access or tampering to in-wall cables with these convenient inserts. Installation Tips Hook the bottom lip into the cut-out while holding the keystone insert at a slight angle Rotate the insert upward to snap the retaining clip on the top into the opening until it snaps into place