The Koyo SB207 is a high-quality insert ball bearing featuring a 35mm bore diameter, 72mm outer diameter, and a 42.9mm inner ring width. Designed with a spherical outer ring and set screw locking, this robust bearing is commonly used in demanding agricultural machinery and various industrial applications, providing reliable performance and easy installation. It is a popular choice for replacements in disc harrows, planters, and other farm equipment.