This is a set of brackets for installing 16cm speakers in the front and rear of JB64 Jimny and JB74 Sierra. *Regarding the rear brackets, it is also possible to change to a type of bracket that relocates the genuine front speakers that have been removed to the rear. ・Compatible with aftermarket 16cm speakers. Set of left and right ・Includes mounting bolts ・Installation of Carrozzeria TS-F1640 has been confirmed. Although the specifications of major domestic manufacturers appear to be the same dimensions, 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: Front φ164, Rear φ160 PCD: φ150 ●Installation Procedure 【Front】 ① Install the brackets to the vehicle side as shown in the second photo. ※Includes M6 bolts, washers, and nuts, 3 each ② Screw the speaker to the bracket. ※Includes tapping bolts and washers, 4 each ◎It is recommended to use thread locker on the nuts to prevent loosening of the screws due to long-term use. (Available for purchase on Amazon for around 200 yen) 【Rear】 ① Screw the speaker to the bracket. ※Includes small bolts and washers, 4 each ② Remove the cable hook on the vehicle side. (Pinch both sides and push inward) ③ Screw the bracket with the speaker attached to the vehicle. ※Set it sideways as shown in the 8th photo and rotate it 90 degrees for easier setting. ※Includes large bolts, 4 each ④ Return the cable hook Speakers are not included. Thank you.