4.5" x 16" offset chine RID (reduced inner diameter, CIH style)gauge wheel assembly with a 5/8" bore bearing. This is a nylon/steel assembly with many applications. Can be used on all Kinze planters 2000 and later, CIH SDX30 and SDX40 air seeders, CIH 1200 series planters, White 8000 series planters. Pack of 1