ITEM NAME:20pcs Watch Case Dies Press Fitting Kit Watchmaker Back Cover Closer Repair Tool 20pcs Watch Case Back Fitting Dies Press Closer Repair Tool Replacement Set SPECIFICATIONS.(Item included: 20 x Different Size Watch Dies. Suitable for: the watch tool crystal press and back case press. 2) Color may vary slightly due to the color setting of each individual monitor. 2) Perfect replace for the worn one or the old one.