Male Jic X Male Bspt

You're right on the money. That 56.4mm length for this fitting is the total length from the very end of one side to the very end of the other.

Straight through is exactly how it works. One end is a 3/4-16 UNF Male JIC at 1/2 inch, and the other is an R 1-11 Male BSPT at 1 inch. No reducers needed, no intermediate fittings. Steel construction keeps it solid for hydraulic line use, and the straight profile means it installs clean without adding awkward angles to your hydraulic connections.

The JIC side is a 1/2 inch male with a 3/4-16 UNF thread callout, and the BSPT side is a 1 inch male with an R 1-11 callout. It is a straight steel adapter with male threads on both ends.