Kicker 43DSC3504 DS 3.5" 89mm Coaxial Speaker System*Please note, this is a special order item which means we order it in from our suppliers per every order. This could take up to 10 working days* A drop in coaxial upgrade with the flexibility to fit nearly any vehicles doors for a vast improvement over factory sound. The DS 3 1 2 Inch Coaxial Speakers are an excellent factory upgrade. Using zero protrusion PEI tweeters ensures you get every bit of clarity you need, without interfering with factory