Pro-Grade HEAVY-DUTY Nitrile Rubber Speaker Glue Professional-Grade hexane-based HEAVY-DUTY Nitrile Rubber adhesive specially formulated to form a permanent, flexible bond. Being nitrile rubber, this is even STRONGER than the black rubber, but slightly less flexible. Goes on yellowish/tan; dries the same. This is the REAL THING!! Available size options: 1/2oz, 1oz, 2oz, 4oz, 8oz and 16oz 1/2 oz is enough to replace the surrounds on 2 - 10" speakers. MANY quality speaker manufacturers and professional reconers use this for: Attaching cones/surrounds to speaker frames Replacing/attaching foam surrounds Attaching dust caps Attaching gaskets Repairing holes in cones Glueing down lead wires Attaching everything but the voice coil Tacks in 5 minutes, fully-cured in 24 hours. Yorker lid included