-02 End Block changed to XNS-W39-02, a manufactured part included in the Xenos-B kit.
XNB-W39-02 and XNS-W39-02 have identical specifications.
-03 Attach Block changed to XNS-W39-03, a manufacured part included in the Xenos-B kit.
XNB-W39-03 and XNS-W39-03 have identical specifications.
