Bespoke Fountain Pen | Coral Reef by TPC Blanks | M13Description Pen Type Bespoke Cap Threads M13 Resin Material Alumilite Blank Maker TPC Blanks Nib Info Jowo #6 Pen Specifications Total Pen Length 144. 24 mm Cap Length 61. 79 mm Cap Diameter 15. 57 mm Section Length 20. 88 mm Body Length 90. 03 mm Body Diameter 14. 15 mm Our Guarantee I was taught customer service and customer satisfaction at an early age. I have always strived, will continue to strive for 100% customer satisfaction. If you have any