Hello and Welcome to Dusty's eBay store ! A pair of EAW / RCF L18-851KN 18 inch speakers in 8 ohms. Four inch coil, 1200 watts ! Very, very heavy duty. The only difference between this pair and the other pair listed are the labels, which are worn. Both pair were rebuilt simultaniously and are a match. These are popular drivers with the dance clubs and DJ's because of their tremendous low end and huge RMS rating. Completely rebuilt, tested and sounding great. The blue material you see is filter media used to replace the open cell foam that was originally used as a filter. This material will not shed or deteriorate and wind up in the gap, ever. Expect great sound, and lots of it !, and an extended service life from these VLF drivers. Ready to rumble, literally ! When you purchase a reconed speaker from Dusty's you are buying the very best. We use only good un-damaged frames, force a bead of epoxy around the edges of the magnets filling all gaps between plate and magnet w needed and re-bond the magnet to the frame, the magnet structure will hold together for the life of the recone and t will be not a rattle or buzz. Any interior foam screening is replaced with a coated aluminum screen which will not deteriorate and plug up the coil gap over time. All our soft parts are the highest quality the industry has to offer, surpassing the quality of the originals for the nearly every speaker. I personally test each and every speaker. We are not an authorized service center for JBL, ElectroVoice, Altec or any other brand and do not use so called 'OEM' parts. In this way we can offer the best value possible, quality drivers ready to go at less than the cost of a 'factory' reconing on a frame you already own, which you'll have to pay shipping on both ways. We do not pad the price with a 'handling' charge as most reconers do, buyer pays only actual UPS shipping charges. I STAND BEHIND EVERY REBUILT SPEAKER I SELL. If you are not satisfied we will take the speaker back and refund your money without rancour or delay. Items carefully packaged and shipped swiftly once payment is recieved. PAYPAL ONLY PLEASE, NO OTHER FORMS OF PAYMENT ACCEPTED. Please do not bid or buy " shipping included ", shipping charges will be added. For overseas shipment please use the following information to quote your shipping costs for yourself. Shipped from USA Zip Code 06810 50cm x 50cm x 50cm 35kg Check the feedback left by hundreds of satisfied customers and thanks for stopping by !