stripped lug studs

For the rear studs you can replace them as described above but the fronts are a little different. If the studs are staked like they should be, you'll need to cut the staked part out first before you do any pressing or you may damage the hub. After the new ones are pressed in, you should have them restaked so the drum fits tight against the hub. You should turn the drum or at least check to see if it's still straight after you're done.