313-1000-400 is a power take off (PTO) hydraulic pump drive gear built with a 1 inch, 15 spline continental shaft. It is used to drive a hydraulic pump off a PTO unit on the continental shaft pattern. Sold by Pro Gear and Transmission.Interchanges:3131000400HM313-1000-400WA313-1000-400WA20-51-0100Features1 inch shaft diameter15 spline countContinental shaft patternPTO hydraulic pump drive gearTech SpecsShaft: 1 in. 15 spline continental shaft