BABAN Watch Press Set Back Case Closer Crystal Glass Fitting Watch Repair Tool Come with 12 Addition dies ABS plastic won't scratch your watches This watch back press tool comes with 12 assorted dies: 35, 33, 31, 30, 29, 28, 27, 26, 25, 24, 20 & 19mm For closing your snap back watch case after repairing watch Snap-on system allows dies to snap on and off quickly What you get: 1 x Watch press machine, 12 x Dies