MATERIAL – Aluminum handle and steel frame. Acid and corrosion resistant. Smooth surface, sturdy, yet lightweight, easy to install and fits perfectly with the riveter. 8 SIZES – 60*3.2x6mm, 60*3.2x8mm, 50*3.2x10mm, 50*3.2x12mm, 50*4x6mm, 50*4x8mm, 50*4x10mm, 50*4x12mm. PRODUCT FEATURES – Blind rivets feature a mandrel that allows for a jam at the blind end of the rivet and expansion of the rivet shank during adjustment to connect components in an assembly. /p> PACKAGE - 420 pieces in 8 sizes, packed in a sturdy transparent plastic case, easy to carry and dispose. In addition, the box can be used as a storage box. WIDE APPLICATIONS: Mechanical and electrical, shipbuilding, carpentry, automotive, household appliances and other industries. luckymeet