16 Pocket Watch 5 Prong Clock Keys Watchmakers Tools 2 New 5 In 1 Pocket Watch Winding Keys. This is a new set of 2 five sided pocket watch keys. These can be used with a variety of pocket watches. The sizes are: Size 2, 1.75 mm. Size 3, 1.65 mm. Size 4, 1.60 mm. Size 5, 1.50 mm. Size 6, 1.40 mm. Size 7, 1.30 mm. Size 8, 1.20 mm. Size 9, 1.15 mm. Size 10, 1.05 mm. Size 11, 1.00 mm 14 Watch Keys. This is a new set of 14 watch keys. These keys are used for winding watches. You receive: One 00 size watch winding key. One 0 size watch winding key. One 1 size watch winding key. One 2 size watch winding key. One 3 size watch winding key. One 4 size watch winding key. One 5 size watch winding key. One 6 size watch winding key. One 7 size watch winding key. One 8 size watch winding key. One 9 size watch winding key. One 10 size watch winding key. One 11 size watch winding key. One 12 size watch winding key. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.