Check the listing for details. Stripped gear Nylon replacement Hunt Boston model 18 / 19 pencil sharpener 296A. Condition: New. Listed at 12.98 USD. Hunt Corporation Boston Model 18 and 19 Electric Pencil Sharpener restoration kit Helical 70 tooth plus 25 tooth inner gear kit with 2 stainless steel screws included We've developed a repair solution for a stripped inner gear and broken main drive gear This Nylon gear set has improved design with wider face for better durability and performanceOur gear set is 20% wider compare to OEM and other replacements.70 tooth gear fit snugly and won't slip of the shaft thanks to the fine tuned bore configuration and 15 degree Helical teeth angle FDM made out of Nylon - tough and flexible plasticAlso will fit X-ACTO ELECTRIC PENCIL SHARPENER MODEL 18XXXCNDo not waste money for ABS, PLA plastic gear that may strip or meltOnly Nylon should be used for gears where a slippery surface is desired. All other materials (PLA, ABS, PET, etc.) will grind creating a plastic dust and eventually fail!Installation require some mechanical skills: a. Take unplugged sharpener apart b. Cut stripped part off to the length of ≤8mm (0.3") c. Drill two 1/16" pilot holes, attach new inner gear to the frame with 2 screws (included) (opening for shavings release must face down) d. Unscrew steel cutting blade shaft, clean and lubricate(do not lubricate nylon gear surface - it is low friction material) e. Install main drive gear Assemble in reverse order For details, please review all pictures.Sharpener mechanism pictured for fit illustration only and not included.Please empty shavings container regularly to prevent gear stripping. If your Boston 19 sharpener has just the inner gear stripped (incorporated in to ABS plastic frame)Please visit our eBay item number: 362649630795 Thanks for reading.