The heavy duty feel comes from thicker metal and firm mounting tabs that do not flex under pressure.
JoslynClark Sylvania Slim Jim Relay Type 7305-PMS 5SRR KPMA-1 Red Rod 10A 600VAC
I notice the Omron label and feel more confident about long-term use in various setups.
It has a nice touch of being unbranded/general won't clash with your existing setup.
What stands out about this set is the 2pcs - 4pin relays, which fit neatly into compact wiring projects.
You will find that this relay carries the trusted Square D name, which many electricians rely on for daily work.
You will find that this unbranded relay fits standard sockets, and the metal tabs feel secure and nicely finished.
A nice touch is the gentle tension in the terminals on this unbranded relay, which grips wires without crimping them hard.
What stands out about this device is the Square D name, which you might already see in your panel.
A nice touch is that Dayton relays feel snug in their sockets, reducing any worry connections.
You can tell it is built for Industrial Electrical Controls & Automation > Electrical Switches, which keeps troubleshooting simpler.