Pen Kits For Woodturning Penn State Industries Pen Blanks 4 Piston Pen Kit Starter Set At Penn Penn State Industries Website Starter Pen Turning Kit Minimum blank size needed to turn is 3/4 x 3/4 x 2-3/8. Pen Clip is a baseball bat placed in the hands of the batter. You will receive (1) of each in Antique Pewter (PKBASEAP), Antique Brass (PKBASEAB), and Chrome (PKBASECH). 3 Baseball Pen Kit Starter Set at Penn State Industries Pen Kit Bundles and Variety Packs at Penn State Industries This is a woodturning project kit. Pen hardware and bushing set only. Also includes the bushing set (PKBASEBU) needed to make the pens. Aazon.co: Penn State Industries PKBASEAP Baseball Ballpoint Pen Kit Woodturning Project (1... This mechanism works the same way our current Bolt Action pen kits work to smoothly advance and retract the refill. Includes (3) Baseball Ballpoint Pen Woodturning Project Kits. Features a 3/8 single tube design, a 'Curveball' Bolt Action mechanism, and a Parker style ballpoint refill.