Electric PTO Clutch / Warner 5218-219Pack Size:1Hustler 781039K, Hustler 781039, Hustler 787408, Warner 5218-219, Warner 5218-110, Big Dog 781039, Big Dog 781039KStens 255-659, Oregon 33-188, Rotary 11445, Sunbelt B1EC122, Sunbelt B1XT0243For Proper Ordering: Reference Warner or Ogura part numbers stamped on clutch, Designed For: Rugged use, Direction: Clockwise, Diameter Pulley: 6 1/4 ", Installation: To prevent premature clutch failure, follow the instruction sheet included with the clutch, Height: 3 5/16 ", ID: 1 1/8 ", Uses belt width: 1/2 " or 5/8", Made By: An OEM supplier