You are buying six (6) NOS Auveco fasteners. They are general purpose (universal) moulding clips (6) and nuts with neoprene sealer (6) for  Chrysler, DeSoto, Dodge, Plymouth, Jeep & AMC cars & trucks. These clips are for 1/2" to 5/8" wide moldings. The top plate is .700" long x .290" wide with a 10-24 threaded stud that is 15/16" long. The clips are NOS Auveco and the nuts are NEW stock. The neoprene sealed nuts have a 3/8" hex with a 5/8" flange diameter. Please compare your application to the sizes and photos we have provided.