The cup is deep. It paired well with VanLaar. The L is a Yamaha shank. No dents, repairs, or plating issues. I swabbed it after every use and occasionally ultrasonically cleaned it, but it has been in storage for a while, so there is some slight clouding of the plating. I have the impression that the gold plating on Dennis products flakes off easily, but this is silver-plated, so it's reliable. I think it's a good mouthpiece. Thank you for looking.