REXNORD FALK
REXNORD FALK 1030T HUB, 3/8 HUB, 1.375 BORE, 0704601, NIB
The DATA PLATE provides the date of manufacture in a small font.
REXNORD FALK 1030T10-30.00 HUB, 30mm HUB, KWY1: 8X3.3, NIB
What I like is the zinc coated finish, which seems to resist scratches better than plain metal.