License: This is licensed for commercial or non-commercial use.
db Red-Line Floor Seamless Texture Part 2 - This is part 1 of 2, but each can be used on their own, or as a group. When using as a group you have three styles - a 2x2 with a red-line, 2x2 without the line, and 1x2 without the line. For example, you could use them together by having the 2x2 with the red-line, and everything else without the line. This would allow for a single line placed in your scene or on your object.
This is a 2x2 tile without the red-line.
readme-dbwalton.txt contains information about commercial use.