• For Eaton Steering Axles with 15" "ES" (Extended Service) Brakes
• "S" - Axle Type
• "ES" - Brake type
• 1-1/4" - Bushing Journal Diameters
• "RH" - Head End
• 10 - Head Number
• 9-9/16" - Effective Lengths
• 1-1/4" - Spline Diameters