• Bore Diameter (ID): 0.8750 inches (7/8 in)
• Outside Diameter (OD): 2.0000 inches (2 in)
• Width: 0.5625 inches (9/16 in)
• Bore Type: Straight
• Closure Type: Double Shielded (denoted by the "-77" suffix, utilizing two metal shields to block larger dust particles while retaining factory grease)