It's SUPER Glue,
This review is from: Scotch Super Glue No-Run Gel in a Precision Applicator (SGAD-889A) - 4g (Office Product)
Customer review from the Amazon Vine Programme (What's this?)
I tried to stick metal to leather and it didn't work. I think I was over-ambitious. I'm sure it's a good superglue if you want to stick other materials together, but not metal to leather.
The applicator is good - it doesn't make a mess and you can be very specific on where you place the glue.
What more can one say? It's superglue.