TrueGoon

I could not for all the keywords I tried searching, locate these studs online before your reply. I agree that sewing the loops will look better, I may try this. Thank you both for your help.

Can anyone identify what these two pieces of hardware are called? One is a pin that uses a lock to secure a collar/belt/strap. The other is a plate with two spikes and embeds into the leather. I am brand new to leatherwork. The pictures come from reddit user u/warm_vanilla_sugar.