FREE SPRING TOOL - $19.99 VALUE!!! NEW PREMIUM MAT FOR 15' TRAMPOLINE 90 RING-7"SPRINGS Made for 15' Trampoline Frame (Measure from outside frame to outside frame) Spring Size: 7" (Remove one spring and measure from hook to hook) Spring Count: 90 Springs One year Warranty. Made of U.S.A. Permatron Fabric for the ultimate rebounding surface! Universal mat made to fit all brands, JumpKing, Leisure Kingdom, Hedstrom, Wal-Mart, Costco, Sam's Club, Sports Chalet, Sports Authority, Sundance, NBF, AirMaster, Regal, Sky Bouncer, JumpSport, Bazoongi, Bollinger, Supertramp, and all other trampoline brands.