Our GXP-LEFT open bore adapter is used to press 22x37 sealed bearings into SRAM GXP bottom bracket cups and direct fit frames like TREK BB90. The adapter is machined with one step at 22mm OD, which fits into the center of the sealed bearing.
Our Large Sealed Bearing Press Press-1 instructions show how to press bearings using our bearing adapters. Download: Bearing Press Adapter Instructions