Steel Reusable 1 Wire Braid Reduced Bore Two-Piece Fitting, 3/4-16 Female JIC 37 deg Flare Swivel, -10 Hose, Straight

Match it up by the connection details. End 1 is a 3/4-16 female JIC 37 degree flare swivel, and the hose side is for -10 hose. It is a straight, two-piece reusable steel fitting in the 4401 series reduced bore style.

Correct, the bore through the fitting is sized down relative to the hose end, which is what "reduced bore" means on these. The hose side accepts -10 hose and the swivel end runs a 3/4-16 thread with a 37-degree JIC flare seat. Those two dimensions serve different purposes, so the mismatch is intentional, not a listing error. That configuration is pretty common when you need to step down flow or connect into a port that doesn't match the hose ID directly.

Reusable in this context means you can disassemble and reassemble the fitting onto hose without needing to scrap it after one use. No mandrel is required for installation, which is part of what makes the process repeatable. That said, always inspect the fitting carefully between uses for any deformation or wear before putting it back into service.