You are buying ten (10) NEW fasteners. They are 1/4-20 zinc plated nuts with mastic sealer that fits Chrysler, DeSoto, Dodge, Plymouth, Jeep and AMC. The nuts have a 7/16" hex and a 19/32" diameter flange. The nuts are for a 1/4-20 (coarse thread) threaded stud/bolt. Great for under hood, dash, heater box, interior or exterior applications, etc….