Check the listing for details. WOODRIVER Project Kit - Hart Double Twist Pen Kit Gold. Condition: New. Listed at 7.99 USD. NEW, WOODRIVER Project Kit - Hart Double Twist Pen Kit, Gold, 145229, Create the pen yourself with this kit and your lathe., Middle-sized design and Durable plated finish, Easy assembly including clip and cap, Double-twist mechanism, Create the pen yourself with this kit and your lathe. This new pen is a perfect "in between" size. Smaller than the classic American-style pens, but larger and easier to grip than the slim-style pens. This easy-to-turn kit does not require any parting or tenons for the center ring. Double twist mechanism turns left or right to extend the ball point, turn to center to retract. To complete a pen, you will also need a 3/4" x 3/4" x 5" blank, letter "O" bit, bushings and mandrel, sold separately. Gold finish.