DAVIS 3 1/4" - Perno a due fori--Acciaio 12L14 - Filettature 1/2-13 con manopole rapide
They are made of 12L14 Steel. This is for one set of 3 1/4" two hole flange pins with quick knobs as shown. They have 1/2"-13 threads and 45 degree taper. They will work on hole size 1 1/2" to 3" up to 5" thick flange.