1.5 to 2 inch light duty saddle / sledge (supplied individually).
This saddle has slots (rather than holes) and can take both the 1.5″ and 2″ V bolts, though the fit is abit tight on the 1.5″ Vs with a 1.5″ pole, and the 2″ Vs with a 2″ pole
1.5mm Pre Galv steel.
Also see galvanised heavy duty saddles (2″, 2.5″, 3″, 3.5″ and 4″)
See use of saddle with V bolts.