Blind rivets (countersunk head) / NSA / Aluminum body (flange) / Steel mandrel (shaft) / Use when keeping the surface flat. A small box that can be conveniently used for all your necessary work. You can tighten multiple base materials from one side with one action. Please use a shrimp rivet to work with shrimp blind rivets. Applications: For aircraft, marine, trains, automobiles and other vehicles. / Farm equipment, furniture, signs and other signs; Sheet metal, construction, sash, interior and more. [Caution/Conditions] When using, please take care of the appropriate firming plate thickness and hole diameter according to our specified dimensions and take thorough consideration to the safety rate. Please be sure to read the rivet user manual carefully before using. Image Note: The image uses NSA54KEB.