Hi,

I have got a TTi-125 and used it for about 10 months. That is really a good quality and well-made pen and I like it very much. Now there is a new version called tti-120, which is a little smaller than the tti-125. Here are some photos of tti-120:

It has a Tungsten Steel Pen Point which can be used to break glasses:

It has a quite clever design makes it suit for many different size refills: 98mm, 111mm, 129mm, here is a picture of suitable refills:

Here is some introduction:
Made completely from titanium, can be customized with a stamp or logo of your choice. Suitable for many brand rollerball refills.

It is a well-designed and elaborate roller pen.

This pen is unique and powerful.

Also can be an EDC pen.

The writing comes first with this pen.

Whether you use it as a roller-pen or an everyday carry (EDC) pen.

And here are the specifications:
1) TOTAL WEIGHT: 46.8 g / 1.65 oz.
2) WEIGHT WITHOUT CAP: 35.0 g / 1.23 oz.
3) DIAMETER: 12.0 mm / 0.47 in.
4) TOTAL SIZE WITH CAP: 142.5 mm / 5.61 in.
5) SIZE WITHOUT CAP: 136.0 mm / 5.35 in.
6) COLOR: Natural Titanium.
7) SURFACE TREATMENT: Polished & Hand Blasted.
8) REFILLS: Suitable for many different refills,
98mm, 111mm and 129mm refills are all suitable.
9) ACCESSORIES: Rollerball Refill X 1（PILOT G-2）,

Stainless Steel Spring X 2(one used by refill, the other spare),Tungsten Steel Pen Point.

Cheers!