VNC-A4AVI: 4" coupler swivel with Viton GFLT seal & Aviation grease.
VNS-A4: 4” Straight Single-plane Swivel with 4” TTMA flanged ends - Aluminium.
VNS-A4AVI: Aviation spec 4” Straight Single-plane Swivel with 4” TTMA flanged ends - Aluminium.
VSA4-SHORT: 4" aviation selective loading arm coupler spool (15o angle) - 122mm length.