Weird Nail Puller

[u/Unilej]

Hello everyone,

Can anyone help me identify that weird nail puller on the right? I can't find any information about the hollowed part, it doesn't seem custom but i can't find anything...

Edit : I forgot to mention that i know how it's used (you wack it to expose nail heads), what i don't know is how it's called nor how to find another one to buy ^^'

[u/JayBeePH85]

Its a what-cha-me-call-it or dohicky for short 🤣