Chinese made J-caged bearings. These are EZO style / J-Caged bearings I could source at a reasonable price. Whilst EZO are nice they're 3 times more expensive.
Most bearings are 2.5mm in height, these are 3mm. J-cage bearings generally offer the strongest performance for high speed applications. Inside the bearing is a 2-piece steel ribbon, the cover side and the finger side. Inside the ribbon are 6 steel balls.
Rated Load: Cr: 553N / Cor: 176N
Material: Gcr15 (bearing steel)
Lubricaton grease: A3-84
Cage Material: SPCC steel
Ball Diameter/Number: 1.588mm x 6pcs
Inside Diameter: 3mm
Outside Diameter: 8mm
Height: 2.5mm
Flange O.D: 9.2mm
Flange Height: 0.5mm