Made of Stainless Steel, provides a finished look.
Includes Set Screw Which Provides Additional Anchorage for the Armored Cord.
Inside Diameter (what the cord passes through) is approx. 3/8" (9mm)
Outside Diameter (what enters the phone or panel) is approx. 1/2" (13mm). The Lip Which Covers the Hole is approx. 5/8" (17mm)