Comparison : Item # DDRI-2, DDRI Series Extended Inner Ring Miniature / Instrumentation Ball Bearings
Item # DDRI-2 1/2, DDRI Series Extended Inner Ring Miniature / Instrumentation Ball Bearings
Item # DDRI-3, DDRI Series Extended Inner Ring Miniature / Instrumentation Ball Bearings
Item # DDRI-4, DDRI Series Extended Inner Ring Miniature / Instrumentation Ball Bearings
Item # DDRI-3332, DDRI Series Extended Inner Ring Miniature / Instrumentation Ball Bearings