COMPLETE ASSEMBLED 13-1/2'' OPENER WITH DUST CAP **5/8 HOLE. Replaces Allis part# 577113 Seed Disc Opener, Case-IH part#'s 141464C91 & 603020R91.(Note: Will Not fit IH 5100 Drills) Crust Buster part# 920082RH. John Deere part# AA27458. Lilliston part#'s 46603281 & 46603280. Tye part# 540-647R & 540-647L. White part# 247169B5. Great Plains Part# 107-0545.