ITEM NAME:OBD2 Extension Cable 12 Pin to 16 Pin Female OBD1 OBDII Connector Adapter f A4P4 OBD2 Extension Cable 12 Pin to 16 Pin Female OBD1 OBDII Connector Adapter f A4P4 Only use for GM vehicles. Standard OBD1 (12 pin) OBD2 (16 pin) diagnostic extension cable, brand new and high quality. The GM 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. OBD extension cable utilized eco-friendly materials, reduce environmental pollution. COLOR:black When your car only has a 12PIN interface, But you want to diagnose your car with OBD All OBD need a 16PIN interface At this time our GM transition line will help you Wish everything is ok with your car Brand new and high quality. The GM 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. GM 12pin to OBD1 OBD2 connector. material:ABS Package Included: 1 x GM 12 pin to OBD 16pin Diagnostic adapter cable Note: Light shooting 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.