Note: It is normal that slight modification of the speaker adapter is required for some speakers. The 6.5” speaker mounting bracket made of durable ABS plastic and good craftsmanship for durability and practicality. Easy to install. Utilizes existing vehicle mounting points. Sonata door speaker adapter fits most 6.5” or 6.75" aftermarket speakers with a maximum top mount diameter of 5 3/4". Inner Diameter : 147mm / 5.7"; Outer Diameter:168mm/ 6.6". Thickness: 6mm/0.23". 6.5” front speaker bracket for Hyundai 2001-2016 select vehicle models like Elantra/Sonata/ Genesis and KIA 2001-2012 select vehicle models like Cadenza/Optima. Please check with the picture 3. 6.5inch santa Fe speaker ring adapter use to upgrade your vehicle factory speaker with aftermarket speaker into the factory locations.