This is a bracket for installing 16cm speakers in the front of a JB64 Jimny and JB74 Sierra. ・Compatible with aftermarket 16cm speakers. Set of left and right. ・Includes mounting bolts. ・Installation of Carrozzeria TS-F1640 has been confirmed. Although 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 need to worry about moisture absorption like MDF. ●Dimensions Inner diameter: φ132 Outer diameter: φ160 Thickness: 18mm PCD: φ150 ●Installation Instructions ① Install the bracket on the vehicle side as shown in the second photo. ※ Includes 3 M6 bolts, washers, and nuts each. ◎ To prevent screws from loosening due to long-term use, it is recommended to use thread-locking adhesive on the nuts. (Available on Amazon for around 200 yen) Speakers are not included. ② Screw the speaker to the bracket. ※ Includes 4 tapping bolts and washers each. We also sell brackets for relocating the removed original speakers to the rear. Thank you.