Very nice buy for $3.00. The piece you are calling a "Drill" is actually an exhausted Knife. I don't see evidence of it being used as a Drill. It would be very polished along the tip and lower edge if it was a Drill. The "Spearhead" is also a Knife and the reason they look old is just the very weathered material they are made from which looks to be Rhyolite. The others look to be quartz.