Shop All Parts › AGHUB026 - Hub Unit AGHUB026 - Hub Unit $103.50 Hub Unit for Disc Blade, Flange O.D.6-5/8", 4 bolt holes on PCD 5-1/4', stud thread 3/4"-16UNF (female) Hub Unit for Disc Blade, Flange O.D.6-5/8", 4 bolt holes on PCD 5-1/4', stud thread 3/4"-16UNF (female) Add To Cart Added!