Check the listing for details. WOODRIVER Project Kit - Tenacious Click Pen Kit - Chrome. Condition: New. Listed at 30.48 USD. WOODRIVER Project Kit - Tenacious Click Pen Kit - Chrome, 169072, Kit requires a pen blank, bit, mandrel, and bushings, all sold separately, Durable plated finish, Virtually indestructible Schmidt SKM-88 all metal click mechanism, Measuring 5-9/16" overall, the Tenacious features a knurl design pattern and a well-balanced, 3-11/16"-long slender body that is perfect for showing off blank material, Use this WoodRiver Tenacious Click Pen Kit to craft a pen designed and built to last a lifetime. Tenacious Pen Kits utilize the Schmidt SKM-88 click mechanism, built completely of metal, which provides smooth, quiet, and dependable use time after time. Measuring 5-9/16" overall, the Tenacious features a knurl design pattern and a well-balanced, 3-11/16"-long slender body that is perfect for.