Will these fit Seismic 3DM Speedvent Wheels in 73mm 79a? --- Dan Loveland Writes - Yes, Seismic uses 10mm width spacers so the Bilt-In bearings will work.

THESE BEARINGS ARE AMAZING, SO MUCH EASIER NOT TO HAVE TO MESS WITH SPEED RINGS AND BEARING SPACERS, THE FIT SEEMS TO BE VERY PRECISE, THEY ARE VERY FAST AND SMOOTH, I'LL NEVER BUY ANYTHING ELSE.

Will these work on Kahalani 184 trucks? --- Dan Loveland Writes - Yes, Kaha trucks have 8mm axles.

These bearings are the best thing on the market hands down. Easy to install cause there's no other parts, smoothest ride ever, they dont make annoying noise, they just sound like a rolling thunderstorm, or an airplane, when you go fast. it's awesome. plus you can titghten the wheels more than with other bearings so there is no wobbly wheels. and the seal is amazing, ive opened them a few times expecting to have to clean em, they were spotless! get them, they cost the same as any shitty-ass bearings, but they're awesome! if you don't love em give them to me.

I,ve heard some good things about these bearings but do they fit in orangatangs? --- Dan Loveland Writes -- Yes, the Abec11 Biltins will fit O'tang wheels. The O'tangs use a 10mm width spacer. So if you have Randal or Paris trucks you need 8mm Axle Diameter X 10mm Width Spacers. With the Biltin bearings you don't need spacers due to the fact that they are built into the inner race of the bearing = 10mm width spacer when installed in a wheel. Thank you and happy skating.