【material】 The rivets are made of high quality aluminum alloy, are rustproof, have good anti-corrosion properties and are reliable, ideal for indoor and outdoor use. 【6 different sizes】 M3.2 x 6.4 (100pcs), M3.2 x 8 (100pcs), M3.2 x 10 (100pcs), M4 x 10 (100pcs), M4 x 16 (50pcs), M5 x 12 (50pcs). Different sizes can meet different needs. 【function】 Blind rivets can be used for a variety of purposes around the home and at work. These fasteners attach metal sheets together so easily and efficiently. Aluminum rivets have the lowest tensile and shear values of all snap rivets. 【Easy to use】Standard head size, smooth surface, easy installation and easy riveting, commonly used in pneumatic riveting tools, electric riveting tools and manual riveting tools. 【Wide applications】 Widely used in construction, automobile manufacturing, ships, aircraft, machinery, electrical appliances, furniture, etc. Especially suitable for riveting occasions where it is not practical to use an ordinary rivet.