These bearings lasted me about 8 months.They completely shredded in the wheel.now im stuck not being able to skate until i cant afford to buy a par of decent ones.the bearings didnt get me going very fast at all even after oiled.and i oiled with baby oil too.that stuff oils VERY well.i wouldnt recomend these to anyone.if i had known they would shred like this before i bought them i never would have gotten them.i rpobably wouldnt have gotten them anyway.this is on skater who is going to stick with bones instead of these garbage bearings.pig abec5 bearings are horrible.dont buy them unless youre prepared to replace them.