A flanged ball bearing is not truly a different type of bearing.
Just as are offered sealed or open, they are also available flanged or plain.
The flange is just another option given to the design by the bearing manufacturer.
A flange is an extension, or a lip, on the outer ring of the bearing, designed to aid the mounting and positioning of a bearing in a delicate or problematic application.
TECHNICAL SPECS
Item: F695RS Bearing
Type: Flanged Deep Groove Ball Bearing
Closures: 2 Rubber Sealed
Lubrication: With Grease
Flanged Side: 15 mm
ID (inner diameter)/Bore: 5 mm
OD (outer diameter): 13 mm
Width/Height/thickness: 4 mm
colour: silver
Material: steel

Package Contents:
10xF695- Bearing
Only the above package content, other products are not included.
Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

What's in the box
10 x F695-2RS Bearing