Hello all, new here.

I just bought a pair of Tektro TL720s (http://www.tektro.com/_english/01_pr...r&sort=1&fid=3), and was dumb enough not to notice it is for internal routing through handlebars.

I have aluminium bullhorns without holes, what are my alternatives?

I've considered drilling holes, although I'm not familiar with where and how I should go about doing that, as well as the safety issues.

Is there any way to have the cables on the exterior of the handlebars?