Specifications: Material: Stainless Steel Color: Silver Size: 23 * 67 mm Weight: Single 4g Package Include: 4 * Car Radio Release Tool Key Usage Instructions: ①Insert the 4 keys into each radio slot with the curved edge with the slot facing inward. ②Slide them all the way in, making sure they "lock" into place. ③Pull all 4 keys at once. ④If it does not work, try swinging 2 keys at a time on each side to feel the radio release. Warm Reminders: - The key does not apply to all vehicles, please refer to the size and shape of your purchase. - Please place it in a high place to prevent children from accidentally eating it. - If there is any problem after receiving the goods, please feel free to contact us, we will solve it for you as soon as possible.