1、Made of high quality ABS plastic diagnostic connector cable, very durable in using 2、Connectors: GM 12 Pins OBD1 male connector; OBD2 16 pins female connector 3、Only used for GM vehicles for connecting OBD II scanner and vehicle with this 12 pin connector 4、The GM 12 pin adapter allows you to connect a GM vehicle with a OBD1 12 pins socket with your existing 16 pins OBD2 tool 5、Utilized eco-friendly materials, reduce environmental pollution Description: This product is a brand new cable of fault diagnostic tool. It is used for GM vehicles and its GM 12 pins allows you to connect a GM vehicle with a OBD1 12 pins socket with your existing OBD2 16 pins tool. Features: 1. Made of high quality ABS plastic diagnostic connector cable, very durable in using. 2. Connectors: GM 12 Pins OBD1 male connector; OBD2 16 pins female connector. 3. Only used for GM vehicles for connecting OBD II scanner and vehicle with this 12 pin connector. 4. The GM 12 pin adapter allows you to connect a GM vehicle with a OBD1 12 pins socket with your existing 16 pins OBD2 tool. 5. Utilized eco-friendly materials, reduce environmental pollution. Specifications: Material: ABS plastic Color: Black Type: 12 pin to OBD2 16 pin connector cable Size: As the picture show Package Weight: 102g Fitment: Compatible with GM cars made after 1996 Package Included: 1 x Diagnostic Connector Cable Note: 1. Please note that this item is just a cable, not a scanner or diagnostic tool. 2. Please allow 1-3cm error due to manual measurement. Thanks for your understanding.