You get crafting experience.

You take a piece of leather and a needle and then just use the needle on the leather and there you go: a coif. This is for high level crafting.

It is used in some crafting tasks, such as making things out of leather.

you level up your crafting level by making certain items like leather gloves for starters but you have to know how to get leather first kill a cow and take it's hide to a tanner and the only one i know of is in al kharid.

The following online stores, have good prices for leather crafting tools: LeatherCraftTools, eBay, Amazon, Brettuns Village Leather, and Tandy Leather Factory.