The HHA TWI-02 features a recessed crown for positive thumb control with integrated steel pocket clip. At the opposing end they have incorporated a 46-48 HRC steel ‘ball’ tip for emergency glass break applications. The entire shaft of the pen is constructed from 6000 series, non-reflective; black anodized aluminium for extreme longevity and wearability.
The TWI-02 includes an O-ring seal making it completely waterproof when the cap is screwed down over the writing tip; the opposing end has a ‘click on’ feature for the cap. Knurling at key points along the pen aids a positive grip.
When it comes time to replace the refill the TWI-02 will accept standard Parker and Fisher Space Pen refills - We have found these refills to offer superior performance.