The Pentel Tradio is a luxury refillable version of the old Tetras Stylo, which is itself an evolution of the classic Fountain Pentel. The Tradio features a flexible delta nib, double-sided with firm or flexible response, adapting to the writer's style. Supplied with a black refill. This pen has a unique flexible plastic nib, ideal for both writing and drawing. It features a matte black housing and a cap with a clip. It is refillable with cartridge MLJ20.