Lamy Studio Lx Fountain Pen, All Black. The Lamy Studio Lx All black fountain pen has a matte black finish and a PVD coated black nib for extra durability. Its black grip and propeller-shaped clip give the Studio an eye-catching design. Uses the Lamy T10 ink cartridge (1 included with pen) or the Lamy Z27 converter for bottled ink (also included). Additional Lamy T10 ink cartridges and Lamy Z27 converters are available in our store under Lamy Refills. Studio is 5-1/2" capped and approximately 6" with the cap posted for writing.