You made a great choice in the Lippert Components Power Stabilizer Trailer Jack. For starters, all of the jacks measure to be 70-1/2" long with a 3,500 lb weight capacity and have a 30" lift. The difference between them is in regards to what is included with them. The part # LC369774 comes with a white switch and part # LC298707 comes with a black switch. That is the only difference. view full answer...