For those making or repairing saddles, harnesses, etc, or for those indulging in other forms of leather work, here are Saddlers Harness Needles from the very respected British company, John James.
These round pointed, large steel needles measure 57.5mm in length, have a 1.09mm diameter, and are sold in a pack of 25 needles. Their John James code is L3912.