2 Watchmakers Sliding Pin Vises Drilling Hand Tools. This is a new set of 2 sliding pin vises. These have a slide for easy one hand operation. Great for holding earring studs. You receive: 2 Sliding pin vises that each measures approximately 4 1/4" (107 mm) long. 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.