Ballistic SSSK Speaker Kit 2 Pcs 10x10 Sound Dampening (2 Sets for 4 Speakers)

2 X BRAND NEW BALLISTIC BY METRA SSSK SPEAKER KIT 2 PIECES (10'X10') 254MM X 254MM) TWO SETS TOTAL 4 SPEAKER SOUND DAMPENING BALLISTIC SOUND DAMPENING MATERIAL is an elastomeric butyl and alu