2x Headset Bearings

41x6.5mm 45° (see pic for breakdown of measurements)

Part Number: PO3 / PT-R408 

These are a common size bearing that fit many applications including Cane Creek, FSA, and many other makes / models

I believe the manufacturer is Kinetic Bearings. These were purchased from Budnitz Bikes when they shut down. Budnitz was a premium bike company that only used high quality parts in their builds. 

Bearing specifications: 

Inner x Outer x Depth (mm): 30.15 x 41 x 6.5

Inch Dia: 1-1/8”

Angle / Chamfer (Deg): 45 / 45

Bearing ID: 30.15mm

Bearing OD: 41.0mm

Bearing Thickness: 6.5mm

Internal Angle: 45 Degrees

External Angle: 45 Degrees

Material: Bearing Steel

Grease: Mobil XHP-222 or SINOPEC HTHS

Bearing Grease Seal: Double-sealed 2RS

Material: Chrome Steel 100Cr6 (Race & Balls)

Cage Material: Nylon PA66