I don't get why the needle is thicker than my other pumps. It was harder to push it in and I was afraid of ruining my valve. Anyway, I pushed as much as it felt safe, but apparently it was not enough, pumping did nothing. Took it out and used another pump instead (this was my portable reserve).
Maybe it is just me and valves are ok with this thicker needle, I can't say for sure, but I would get another pump. But if you have this don't forget to moisten the needle!