Polk Vanishing Series 80 F/X-LS In-Ceiling Surround Speaker (Pair), 8" Dynamic Balance Driver & (2) 0.75" Ring-Radiator Tweeter, Dual-Port Bandpass Enclosure, Rotating Cam System never used, They have two pieces out of place, check the photos! , I am not familiar with these items, I do not know how to repair it, but I know that they can be repaired and someone who knows can do it easily, for this reason I am selling it as a part at that price. Comes as show in the photos in its original box NEAR-INVISIBLE IN-CEILING SURROUND SPEAKER SET - Equipped with (2) 0.75" Ring-Radiator Tweeter for detailed highs, and (1) 8" Dynamic Balance Woofer for clean, accurate mids, the 80 F/X-LS speakers are designed to produce an enveloping rear soundstage BIG SOUND, NO FOOTPRINT - With a precision-engineered minimally flanged design and Polk's exclusive Sheer-Grille, which protrudes only 7mm from the ceiling, the speaker virtually disappears in the wall, but the room-filling audio can be heard loud & clear FEEL THE HEART-THUMPING BASS - Highly efficient in small enclosures, the dual bandpass bass ports deliver deep, rumbling bass and minimize chuffing, so that you hear crystal-clear dialogues and pristine sound quality for your movies, music, and TV shows EASY TO MOUNT AND INSTALL - Each 80F/X-LS has 4 rotating cams that hold the speaker in place for a simple one-cut, drop-in installation. Comes with paintable magnetically-secured metal grille - leave it as is or spray paint to match your interiors BUILD A COMPLETE HOME THEATER SYSTEM - Pair with the Vanishing LS Series center-channel and in-wall speakers or use them as surround speakers in a 5.1 or 7.1 channel home theater configuration along with Polk's floorstanding and bookshelf speakers POLK'S UNWAVERING COMMITMENT, RELIABILITY, AND CRAFTSMANSHIP has made it one of the most trusted names in home audio. Bring out the best in surround sound systems and acoustic excellence, so you can SIT BACK, RELAX AND LISTEN WITH YOUR HEART