Features: _x000D_ and high quality. _x000D_ Made of brass material, these inserts are durable and heat-resistant. _x000D_ These are several inserts set in different lengths that you can choose as needed._x000D_ _x000D_ Each set contains many inserts that you may use for many projects. _x000D_ Small size and light weight, these inserts are convenient to use. _x000D_ _x000D_ _x000D_ Specification: _x000D_ Material: Brass _x000D_ Size(D*L*d) & Quantity:(Optional)_x000D_ M2.5*3*3.5; 100pcs_x000D_ M2.5*4*3.5; 100pcs_x000D_ M2.5*5*3.5; 100pcs_x000D_ M2.5*6*3.5; 50pcs_x000D_ M2.5*8*3.5; 50pcs_x000D_ Weight: 11g~19g / 0.4oz~0.7oz (approx.) _x000D_ _x000D_ _x000D_ Package list:_x000D_ 1 set * Inserts 1 and high quality. 2Made of brass material, these inserts are durable and heat-resistant. 3These are several inserts set in different lengths that you can choose as needed. 4Each set contains many inserts that you may use for many projects. 5Small size and light weight, these inserts are convenient to use.