Speaker Rings allow you to change original working speaker against standard brands of high quality speaker. Working Speaker often have a vehicle-specific form, so no retrofit speaker in fits DIN format in the mounting bay. By using this rings can be speakers into your vehicle without great effort. The installation is simple and can bewerkstelligt. in a short time Suitable for the following vehicles: Opel Corsa B (S93) 01/1993 – > 08/2008 For Opel Corsa C (X01 11/2000 – > 10/2006 Opel/Vauxhall Tigra (S93) 1994 – > 2000 Opel/Vauxhall Vivaro (E7/F7/X83) From 2001 Renault Trafic (El/FL/JL) from 09/2001 Place of installation: front door Woofer: 165 mm Installation cut-out: 142 mm Exterior D-rings: Diameter 163,50 mm Ring Size: 13/cm mm Package Content: 1 pair of speaker adaptor rings 1 x Pair of Speaker adaptor cable