WNC1064 Features: * Operating speed: 540 RPM * Generator end connection: 1-3/8"" -6 spline * Tractor end connection: 1-3/8"" -21 spline Specifications: * Provides reliable electrical power for utility tractors with 12 to 40 horsepower PTO * Compatible with 35-50 kW PTO generators from Winco * Shaft power rating: 90-100 HP