Detailed Product Description 1) Product name: Single direction thrust ball bearing. 2) Product number.: 51100, 51101, 51102, 51103, ... 51104, 51105, 51106, 51107, 51108, 51109, 51110 (see table below). 3) Product ... 440C, SUS304. 4) Product quality: ABEC-1, ABEC-3 grade. 5) Product brand: neutral brand, ...