NY000-AB01 is a box mount wall bracket — the kind of simple steel you bolt to a panel or machine frame to hang a junction box, sensor head, or small enclosure. It's an active-production item, supplied in bulk, so you buy it by the box, not the piece.
Packaged in bulk — no retail hang tag, no individual carton. If your stockroom counts by the piece, factor that in. For a line-down replacement or a panel-build order, it's the same bracket either way.