Rated 2 out of 5 by Anonymous Poor
Bought this for a carbon steerer. No good. Did not bite enough to tighten the top cap properly so I didn't even got out on the bike with this. Ended up using the deda bung which is longer and tightens in separately from the top cap.
06 June 2013
Rated 4 out of 5 by Anonymous Easy to use
Can't see how this could fail to work, 5mm key expands bung (plenty rough enough to grip), 6mm key tightens top cap to preload bearing. Loses a star as there is no plug to prevent water collecting in the top.
23 December 2011
Rated 5 out of 5 by Anonymous works much better than the stock one that came with my Felt, no probs with it at all
18 April 2010
Rated 1 out of 5 by Anonymous Rubbish piece of kit
This expanding bolt is very poor. The faces of the wedges are scored with emery paper but not sufficiently to grip the inner face of the carbon forks ( Principia by Mizuno)therefore meaning that I couldn't tighten up the stem onto the spacers.
I had to replace it with one from Condor which had proper knurled faces to the wedge sections
05 June 2009