Item NO:SSB204~SSB212SSB Standard duty, Stainless steel,Narrow inner ring,Setscrew lockingInsert bearing: Stainless steel 440 Steel ball:Stainless steel 440 Shield: Stainless steel 201 Seal: Silicon rubber seal Lubricant: Food grade grease Mobil FM222 Outer ring with grease groove and holes,at same side of setscrew Phone: +86-592-580 8851 / +86-592-580 7618Email: sales@ldk-bearing.com ; benjamin@ldk-bearings.com