The ServoCity 1/4" Bore Flat Pillow Block (16mm x 32mm Mounting Pattern) - 2 Pack features a bearing encased in a flat plastic housing, ensuring the bearing is fully constrained when mounted. Its compact design and goBILDA® 16mm pattern holes, along with additional center holes, facilitate versatile applications. This configuration allows for side-by-side installation with other pillow blocks, maintaining a 24mm shaft separation.