Item: GEBK18S , Type: Spherical Plain Bearing , Inner Diameter (ID): 18mm , Outer diameter (OD): 42mm , Inner Ring width: 23mm , Outer ring width: 16.5mm , Size: 18 X 42 X 23 X 16.5 mm , Quantity: One Bearing , Equal: PB18 SS18 . Condition: brand new, unused item. Please research the item to ensure it fits your application.