Item Name: Manual Watch Press Tool Replacement Cover Clamp Replace Desktop Watch Repair. Color:as shownsize:50/48mm, 46/44mm, 42/40mm, 38/36mm, 34/33mm, 32/31mm, 30/28mm, 26/24mm, 23/21mm, 20/18mmQuantity:1 setMaterial:metal13Pcs Watch Back Case Press Tool Kit Crystal Glass Closer Fitting Repair ToolFeatures: 1.Coming with 12 dies allowing for 50/48mm, 46/44mm, 42/40mm, 38/36mm, 34/33mm, 32/31mm, 30/28mm, 26/24mm, 23/21mm, 20/18mm.2.ABS plastic dies with a metal screw in the middle make it more durable, and won't scratch your watch.3.Easy & quick to fix watch: only three steps - choose two suitable dies, screw them on the press tool, and then press down the handle.4.Good for closing your back watch case after repairing job, not for crystal apart. Note: Before pressing the cover, make sure to use the correct fitting dies to avoid damaging the watch. Note:No retail package.Transition: 1cm=10mm=0.39inch.Please allow 0-1cm error due to manual measurement.