Ok, internet, this looks interesting...

https://www.habitualh.com/products/propane-refill-adapter-with-valve-gauge-2-2

...but I wonder if it's safe/scam/other.

Thoughts?

💥 Propane Refill Adapter with Valve & Gauge

Upgrade Your Propane Refilling Brass Propane Refill Adapter – Tool-free transfers with durable brass construction. Ergonomic design for quick, secure connections. ✅ Upgraded QCC1 Propane Refill Adapter – Features a tank gauge and 1" x 20 female throwaway cylinder thread for a secure connection. Safety 1/4" ON-OFF valve ensures easy refilling, while the finger-friendly red ball valve offers precise control without taking up extra space. Versatile 90° Refill Adapter &nd

Habitualh

@deviantollam The fill adapters do work. Sort of. The fill amount isn't consistent and those small tanks aren't designed for reuse, so they tend to start leaking from their internal valves after a while.

That said, there are small tanks designed (and certified) to be refillable that work with fill adapters.

I wouldn't buy from that webpage though. Just sets off too many scam alarms to me.