After getting my 2018 Mustang GT last year, I purchased a purple shifter knob to replace the obnoxious (IMO) red one the car came with.
To my disappointment while the new knob fit, it was a classic ball without the lower cutout and so the shifter collar was exposed, as was the brass nut that stopped the shifter ball from going too low.
The company I originally bought the shifter knob from also sold these collars (or similar), but with tax AND shipping the cost from them was $35+. Almost twice the price from VMS Racing.
Instead, I went with these guys, placed my order Monday morning, and it was in my mailbox Saturday afternoon, less than a week later.
Fitting the collar to the shifter was VERY easy (just remember to shift INTO Reverse first!), and I really like how it not only hides the shifter bolt and collar, but it almost looks like it's stock.
THANKS VMS Racing!!! I'm very happy with my purchase!!!