the plug is solid and frank when we connect the the cable is flexible to allow its passage behind the already congested furniture other cables (jungle home cinema !!)
I specify one thing: gold plating or copper or any other frills called "pro" are useless for the optical cable since we are on the optical signal .....!
limit the strengthening of the sheath to prevent accidental projection of the optical beam and again!
the optical fiber has changed since then, it is now more flexible and less brittle so voila, you had to restore truth
small bits of fiber protections are provided and attached to the cable, little chance of losing them, practice!
the signal goes perfectly, even no loss of loaded sound formats (DTS-HD for example)