I actually broke the end off my Torx bit when trying to change a droplink on my C5.citronut wrote:sometimes these have torx not allan key ways,
At that point I said "soddit" and heated up the bottom of the droplink until the plastic melted and broke off and I was then able to grasp the round end (ooerr missus) with a pair of moleys.
Perhaps I should have done that to start with.