SUPER LOCK 15P SUPER LOCK

I received this from the previous owner who quit bowling, but I don't have any opportunities to use it, so I've decided to sell it.
The thumb hole has a grip, no plug. The middle and ring finger holes have grips and plugs. All three holes have been plugged once.
The previous owner took good care of it, so there are few scratches or stains.
Thank you for your consideration.