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✅【Intuitive Design】 Our diamond tester features an LCD display and LED indicator make it easy to read your precise testing results. ✅【Effortless

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The TWSBI Diamond 580 comes with a benchmark piston ink-filling mechanism and has all detachable parts. The clear demonstrator barrel allows you to see your ink color and remaining ink level. It has a translucent smoke grey cap, grip section, and piston knob. It is complemented by elegant rose gold trim, a rose gold-plated steel nib, and is presented in a modern clear display case.

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