MaterialThe rivets are made of high quality aluminum alloy, anti-rust, good anti-corrosion property and reliable, ideal for indoor and outdoor use. 6 different sizes M3. 2 x 6.4 (100 pieces), M3.2 x 8 (100 pieces), M3.2 x 10 (100 pieces), M4 x 10 (100 pieces), M4 x 16 (50 pieces), M5 x 12 (50 pieces) ). Different sizes can meet different needs. Function Blind rivets can be used for different purposes at home and in the workplace. These fasteners secure the metal sheets together so easily and effectively. Aluminum rivets have the lowest pull and shear values of all breakaway mandrel rivets. Easy to UseStandard head size, smooth surface, easy to install and simple riveting , commonly used in pneumatic rivet tool, electric rivet tool, manual rivet tool. Wide ApplicationsWidely used in construction, automobile, ships, aircraft, machinery, electrical equipment, furniture, etc. Especially suitable for riveting occasions where it is not practical to adopt ordinary rivet.