The EURO TOOL case press offers the best inexpensive case closer available. It consists of exclusive straight wall nylon dies that will not scratch or mar crystals. The press is made up of cast metal to ensure strength. Set comes with an assortment of fourteen dies, seven hollow and seven flat, to allow for all sizes of watches. Please note: The 18mm hollow die uses the 16mm flat die when closing smaller watch cases. The snap-on system allows dies to snap on and off quickly. Face-down configuration means the repair person sees the case back being closed. Comes complete with full instructions.