This is a bracket for installing 16cm speakers in the front of a JB64 Jimny or JB74 Sierra. ・Compatible with aftermarket 16cm speakers. Set of left and right. ・Includes mounting bolts. ・Installation of Carrozzeria TS-F1640 has been confirmed. While the dimensions appear to be the same for major domestic manufacturers, this has not been confirmed. ●Material PLA+ ※Higher strength, rigidity, impact resistance, and heat resistance than PLA. ※No worries about moisture absorption like MDF. ●Dimensions Inner diameter: φ132 Outer diameter: φ160 Thickness: 18mm PCD: φ150 ●Installation Instructions ① Install the bracket to the vehicle side as shown in the second photo. ※Includes M6 bolts, washers, and nuts (3 each) ◎To prevent loosening of the screws due to long-term use, it is recommended to use thread locker on the nuts. (Available on Amazon for around 200 yen) Speakers are not included. ② Screw the speaker to the bracket. ※Includes tapping bolts and washers (4 each) We also sell brackets for relocating the removed original speakers to the rear. Thank you.