They’re something that I came across as a stroke of luck, and figured Daniel would make better use of them than I would. The LENO is apparently some sort of legendary bluegrass cap that is said to work with either mandolin or thin-neck banjo, and has a wicked cool clasp to hold the bar down, and all the padding so you don’t ding the neck.
The other one is just….neat. It can put a lot of clamping force on the neck for sure.
Glad you like them!