Style 10 (tapered sides and ends) with 13 mm cap threads, choice #6 Jowo nib size. The Earthwood series features a stabilized wood burl which has been dyed, and is matched with blank material from the McKenzie Penworks "Masters Series" which incorporates natural organic or mineral pigments. This blue dyed elder burl is paired with DiamondCast Azurite, and features bronze rings, nickel logo finial medallion, and tree bark acid etched bronze clip - 145 mm overall, 132mm open and 25 grams.