Choose from the following BoltLiner variants:

BoltLiner - this is the longer variant (5.125" with the tip retracted) and includes Pilot's G2 (Euro-style) refill. The Pilot G2 is America's #1 refill and is easy to source locally if a replacement is needed. 

BoltLiner Parker Style - this is the shorter variant  (4.653" total retracted length) and includes a Parker-style refill.

Finish:

TRD -- Titanium BoltLiner given a TRD treatment. Utilizing a special in-house process, TRD (Thermoreactive Diffusion) offers excellent wear resistance and a darker look.