Long Series Drill Bits for Pen Turners. Add the drill bits to your cart depending upon the Pen Kit you have. Statesman Fountain/Roller Pen Kits require 15/32″ & 37/64″. Statesman Classic Fountain and Roller Pen Kits require 10.5mm & 12.5mm. Gents Classic Fountain and Roller Pen Kits require 15/32″ & 37/64″. Rotur Jr Gentleman Gold Fountain and Roller Ball Kits require 15/32″ & 37/64″. Sierra Pen Kits require 27/64″
