Ergon has a range of them 2 is the shortest bar end, 3.4. 5 is the longest ..
integrated, but independently adjustable, grip and bar end is the benefit ..
[trekking bars are in their figure 8 bar bend bars . reach near and far and bar ends all in one.]
in addition to the Ergon combination grip/bar end is their Phorm grip line,
a short bar end is molded in one piece with the ergonomic shaped grip
http://phorm-cycling.com/collections/grips-int