Google Customer Reviews 
Description
The Abus NutFix Seat Clamp is an innovative solution for preventing component theft.
The nut is fitted with a protective cover that only releases when the bike is on its side. This means that it is not possible to access the nut unless the bike is on its side – so when your bike is safely locked up you seat post cannot be removed. The bike can then be returned to an upright position for any maintenance you need to do.
