This vintage Leroy ll lettering set by Keuffel & Esser Co is a must-have for any collector of drafting tools. The set includes six inkling pens of various sizes, perfect for creating detailed and precise lettering on your drafts.

The brand of these pens is Keuffel & Esser, a well-known name in the engineering community for their high-quality drafting tools. This set falls under the Collectibles and Science & Medicine (1930-Now) categories, and is a great addition to any collection of vintage drafting tools.