1.Bore diameter: from 12mm to 140mm:
2.Outer diameter: from 47mm to 300mm:
3.Material:bearing steel/chrome steel--China,(AISI)

  Series UC200 (Inside diameter 13 100)

-    Series HC200 (Inside diameter 13 100)

-    Series UC300 (Inside diameter 20 140)

-    Series UCX00 (Inside diameter 13 100)

-    Series SB200 (Inside diameter 13 100)

-    Series SA200 (Inside diameter 13 100)

-    Series SER200 (Inside diameter 13 100)

-    Series SC200 (Inside diameter 13 100)

-    Series LR200 (Inside diameter 13 100)

-    Series RCSM200 (Inside diameter 13 100)

  Series UC200 (Inside diameter 13 100)

-    Series HC200 (Inside diameter 13 100)

-    Series UC300 (Inside diameter 20 140)

-    Series UCX00 (Inside diameter 13 100)

-    Series SB200 (Inside diameter 13 100)

-    Series SA200 (Inside diameter 13 100)

-    Series SER200 (Inside diameter 13 100)

-    Series SC200 (Inside diameter 13 100)

-    Series LR200 (Inside diameter 13 100)

-    Series RCSM200 (Inside diameter 13 100)