Watch Case Press with 12 Nylon Dies, Watch Case Closer Set Can be Mounted Desk or Work Bench PREMIUM QUALITY: Watch case closer is made of cast iron ensure strength and dies made of quality plastics. Long-lasting Lifespan FIT FOR MOST WATCHES: Comes with 12 assorted dies to help with closing shut most size watches.12 Dies: 24, 26, 28, 30, 31, 32, 33, 34, 36, 38, 40 & 42 Snap-on Watch Backs and Install Flat Glass Crystals without sweating, No more going to the jeweler and waiting around for a long time. Straight wall nylon dies will not scratch or mark crystals