The name of this set is conjectural. Although this article is based on an official subject, its actual name is pure conjecture.
6024305 Best Friends Bricks is a promotional Friends set released in 2012. It consists of two printed bricks. This set was given out at the opening of the LEGO Store in Manchester.
The set consists of two white 2X4X3 bricks. Each has the Friends logo printed on the back. The first brick is printed (on the front) with the word "Best", a small butterfly, and half of a larger one. The bottom brick is printed with "Friends", the lower half of the lager butterfly, and another smaller one. All printing on the front of the bricks is done in uniform dark purple.