Delta offers an incredible new collection of pens that take us back to a time when values like detailed craftsmanship, attention to detail and classic design were the principles of the day. The delta vintage matching fountain pen, rollerball and ballpoint are available in three epoch colors and offer luxury, value and choice. To extend the refill on this ballpoint pen, you simply twist. The twisting is nice and smooth and easy to make, the refill extend or retract concurrently. To replace the refill on the pen, simply unscrew the cap in a counter-clockwise direction. And the refill easily slides out. The pen also uses the delta d900 soft refill. It has a 0.8 Size width. Delta is an italian brand. They have been around for over thirty years. They make some fantastic writing instruments.