North American Electric/WWE
Bushing Kit Size 6 Shaft Mount Reducer 2 15/16"
A nice touch with this unbranded product is the lack of distracting logos.
Bushing Kit Size 4 Shaft Mount Reducer 2 3/16"
Bushing Kit For Shaft Mount Reducer Size 4, 2-3/16" Bore. Part Number: NBS-BK-4-2.0316.