I have an equate brand earplug in the center and it was good for a half dozen packs but then seemed to lose its stiffness and is a ball of gum dead smack center . It must have broken down . Anyways , I shattered a rear diff sungear recently and was wondering if the stiffer center was the culprit or it just monkeyed apart on a sudden jolt. I was lreciously running 500k and liked it enough as everyone says . Amd it’s probably safer now that I’ve blown a sun gear . The good thing was there was a diff all bearinged and cup ready . They have a sale now and again on horizon and you can put them together for $11-$15 with the sale price . It’s super easy and was worth it in this instance . I ordered two more at $11 but the next shipment is in June I believe . I think I saw the the sale the other day of you didn’t mind waiting it’s been a great deal for me . It didn’t show that it came with the input pinion , bearings and outdrive cups but all 3 have so far . Good luck . Happy sends