Air Bearings
SR166ZZ Stainless Steel Bearing 3/16"x3/8"x1/8" Inch Miniature SR166 ZZ Ball Bearings RC Model Parts 10Pcs 
Item: SR166ZZ
Structure: Deep Groove
Material: Stainless steel
Bore Dia (d): 4.762mm
Outer Dia (D): 9.525 mm
Width (B): 3.175mm
Material : Stainless steel
Model Number : SR166ZZ