This 4 Pack comes in handy when you need a few relays for different setups.
GIGAVAC G81C345 HIGH VOLTAGE SPDT RELAY 10KV 26.5 VDC COIL NEW NO BOX
You will find that the Honeywell brand makes this relay feel a nice touch more trustworthy in use.
Many reviews mention that Hach Lange delivers dependable parts, and this relay fits that reputation.