This is a woodturning project kit; Hardware pen parts only; A LATHE IS NEEDED TO 'TURN' INTO FINISHED PEN; Blanks, bushing set, drill bit and all other turning tools and supplies are not included. Includes (1) PKLHPENAC Lighthouse Antique Copper Twist Ballpoint Penturning Project Kit. Can be turned on a 7mm mandrel with compatible bushing set PKSCERBU; Minimum blank size needed to turn is 3/4" x 3/4" x 3". Features a 3/8" single tube design, a special miniature refill (PKLHPENRF), and a double twist mechanism. After turning, assembly, and finishing, overall length is 5-19/32" long.