The axles are as old as the seals which is like 6 months. Passenger side I'm pretty sure is OEM seal with trail gear axle. Driver's side is trail gear seal with trail gear axle. Only reason I didn't use a OEM seal on my d/s is my old axle(before I bought the trail gear axles) had a bad groove in it and it made the oem seal all catiwompus after like not even 1000 miles, so I decided to try the trail gear seal on the d/s. I put grease on the inside lip of the seal Everytime I put the axle in. Like I said I'm going to use a OEM seal this next time I do it. And yes the wits end tool seems very nice but I can have the same out come with a socket the same size as the seal. With my axles being pretty much new I see no reason to over drive the seal in.