Specification:Material: Stainless steelSize & Quantity:M2.5*12 20PCS M2.5*10 20PCSM2.5*8 20PCS M2.5*6 20PCS M2.5*5 20PCS M2.5*4 20PCS M2.5*3 20PCSWeight: 85g / 3oz (approx.) Features: Made of stainless steel, these rivets are durable and resistant to rust. There are total 140 rivets in different sizes that you may use for many projects. All rivets are well packed in a plastic box for convenient carry and storage. Widely used for product labels, nameplates fastening and connection with objects.