Package Content: You will receive 40pcs large aluminum flange blind rivets in size about 1/4 x 1/2inch /( 6.4 x 13mm). The Quantity is enough to meet your needs..Easy to Carry: The blind rivets are packed in a strong transparent plastic box, which is easy to store. In addition, the box can be used as a storage box..High Quality: The rivet is made of aluminum alloy, which is very sturdy and has good stability and long service life..Easy to Use: Blind rivets have a mandrel,which allows upsetting to be formed at the blind end of the rivet and the rivet rod expands to connect the components of the assembly during installation..Wide Application: These rivets are very suitable for connecting various metal plates and tubes. Ideal for joining plastics and thick fabrics. Used for household DIY, business, automobile, aviation, plumbing system, elevator, instrument, furniture, etc.