Lot of used machinest drill bits.Some are stamped Chicago Latrobe on side of them.There are 30 bits even though pic shows 28.They range in size from 1/4 inch up to about an 1 inch.These are old and used with some surface rust,nicks,scratches and chips in them.I got these in a storage locker and do not know much about them.They range in length from 4 inches to 9 1/2 inches.Email me if any questions before bidding.