The G-Knock is your standard gel office pen, available in blue, black, and red. The most popular size is 0.7mm but 0.5mm is available, and 0.38mm can be found in specialty stores. The G-Knock accepts Pilot G2 refills so you can put in a [https://www.amazon.com/dp/B002VKP4EO/ref=as_li_ss_til?tag=100010001-20&camp=0&creative=0&linkCode=as4&creativeASIN=B002VKP4EO&adid=1TPP3GKK0CMTWQ47VF72& 1.0mm Bold refill] if you really want a smooth writing experience.
The G-Knock is available in [http://www.amazon.com/gp/product/B001B0H5QK/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B001B0H5QK&linkCode=as2&tag=100010001-20 office-friendly 12-packs] in blue and black, [http://www.amazon.com/gp/product/B001B0DF7I/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B001B0DF7I&linkCode=as2&tag=100010001-20 red, blue, and black three packs] , and [http://www.amazon.com/gp/product/B003COZFFG/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B003COZFFG&linkCode=as2&tag=100010001-20 single-color 3-packs] .
==Pilot G-Knock review==