Features:- Professional manufacturing,high accuracy and good reliability.- The 12 pin Adapter allows you to connect compatible Diagnostic tools on a GM vehicle fitted with a 12 pin socket with your existing 16 pin OBD2 tool.Specifications:Material: PlasticPackage list:1 x connectorNotes:1. Manual measuring, please allow 1 ~ 3mm error,thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.