Bought these to install 6.5" speakers in my front doors on a 2007 Chevy Silverado 2500HD Classic. Didnt end up using them at all.... The tabs that are supposed to go in the door were wrong (one longer one and the door had 2 separate tabs spaced apart). You dont need them for 6.5" speakers. I installed the speakers by drilling 4 new holes and using the J-clips and screws included with the speakers. A little 3M double sided tape insulated the speakers from the metal. I wouldnt recommend buying these. I wasted my money.