ITEM NAME:Replacement Set of 4pcs Soprano Tenor Alto Sax Saxophone Natural Neck Cork Replacement Set of 4pcs Soprano Tenor Alto Sax Saxophone Natural Neck Cork Description: Material: Nature cork Quantity: 4pcs Great neck cork for saxophone Natural cork has a very good elasticity, sealing, noise resistance and abrasion resistance You can put the it on the boiled water bottle for a while to prevent the cork from fracture Should glue it for two times, start the second coating after the first glue dried, and stick it after the second glue getting dry. Then tie up the cork, heating and drying Size Chart: 61 x 40 x 2mm / 2.4 x 1.6 x 0.08inch Package Includes: 4pcs Sax cork.4pcs Sax cork. Great neck cork for saxophone. Quantity: 4pcs. You can put the it on the boiled water bottle for a while to prevent the cork from fracture. Material: Nature cork. Natural cork has a very good elasticity, sealing, noise resistance and abrasion resistance.