Features 1、100% brand new and high quality. 2、Made of brass material, these inserts are durable and heat-resistant. 3、These M2.5 inserts come in different lengths to meet your need. 4、There are total 150 pieces of inserts that you can use for many projects. 5、All inserts are well packed in a plastic box for convenient storage. Specification Features: 100% brand new and high quality. Made of brass material, these inserts are durable and heat-resistant. These M2.5 inserts come in different lengths to meet your need. There are total 150 pieces of inserts that you can use for many projects. All inserts are well packed in a plastic box for convenient storage. Specification: Material: Brass Quantity & Size: 30pcs M2.5*3 30pcs M2.5*4 30pcs M2.5*5 30pcs M2.5*6 30pcs M2.5*8 Weight: Approx.55g/1.9oz Package list: 150 * Inserts Package List