The connector terminal pin is made of high-quality tinned copper, which has the greatest conductivity, resistance on the tinned and long service life. The buckle design of automobile wire connector can that the contact is inserted into the shell accurately and completely, and prevent it from slipping out of the power plug connector. It is also easy to disconnect to increase convenience. 1/1.5/1.8/2.2/2.8/3.5 mm, different sizes can meet your different needs Products include 21 kinds of 290 male and female terminal pins Connector terminals are widely used in 12V connectors, motorcycles, trucks, ships, jet skis, scooters, automobiles, ships etc Connector design:Crimp Connector Connector Type:Crimp Round plug diameter:1/1.5/1.8/2.2/2.8/3.5mm Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:As Shown Material:Tin-plated copper Package Contents: 1 * Wire Connector Terminal Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.