i put 175,000 on my truck in less then 5 years, i picked it all up, from nails screws, scraps of metal, metal i have no idea wtf it was from. even once at home depot i ran over that metal clip from the free nylon strapping they use to strap cargo down with. i got a free tire out of that one. im like your supposed to keep your loading area clean, look at this place, how am i to avoid this? place was a mess.