Wheel Hub, made from ductile iron, installed with Inner Cup #LM11910 & Outer Cup #LM67010. 4 bolt Holes equal spaced on pitch circle diameter 5" . 1500 lb. capacity, 633 series. For straight spring loaded coulters on DMI, Case-IH and New Holland Colter Champ®II, Tiger-Two®, 500, 527, 527B, 530, 530B, 730, 730B, 900, 1000, 1300, 2500, 6700, 6750, ST650, ST720, ST770. Fertilizer coulters on Blu-Jet, Case-IH, DMI, Progressive/Kongskilde. Coulters on Blu-Jet grain drill coulter cart. Replaces Wilton # 280501