This is for 5 packs of 2 per pack, for a total of 10 Hillman brand speed nuts threaded with U-Type ACP, size 3/8"-16 and part number 881241. These nuts are perfect for use in automotive applications. The part has been well-maintained and is in excellent shape in its original packages. The manufacturer part 881241. This item is a great value for any buyer and is sure to meet their needs.