1040T
Falk 1040T Hub P/N 0704607 Bore: 1.250 KW: 1/4"x1/8" (NIB)
I picked this because TECHTONGDA has a good reputation for reliable machines.
FALK 1040T 46832HAT
A nice touch with the Honeywell INNCOM E528 is the adjustable setback temperature.
FALK 0704606 (1040T) STEELFLEX SHAFT HUB, 1.125 BORE 1/4 x 1/8KW
A nice touch with Baldor is the color-coded wiring for quick setup.