Clockmakers Oiler Hairspring Solution 2 Repair Tools. Anchor Hairspring Solution. This is a new bottle of Anchor hairspring solution. This is specially formulated for hairsprings by Anchor. It comes in a 30 ml bottle. Oiler Pen. This is a new oil pen. These are for use on clocks and watches. The needle end covers a large capacity. Has a tip that measures approximately 0.5 mm. Measures approximately 5 1/4" (133.35 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.