A nice touch is the compact shape, which leaves room for other parts in crowded enclosures.
2PCS Power Relay AC120V Coil 30A SPDT(1NO 1NC) with Flange Mounting and 10 Quick
The RIB brand on this relay is simple and clear, which you will find helps when labeling the panel.
You will find that the 2pcs - 4pin relays work well with standard relay boards and small enclosures.
A nice touch on the LY2N Relay IEC255 is the consistent build, with the same feel across several units I ordered.
The BU1 AC carries a calm, steady feel in the hand, and the click is firm.