Daddario PW-LBK-01 Lubrikit Friction Remover

Lubrikit Friction Remover
The biggest problem with tuning is with friction at the contact points of the strings - this also applies to the saddle and nut. A drop of Lubrkit is sufficient to minimize the friction and thus increase the stability of the instrument when tuning.
 
 
Consistent tuning quality
Prevents the strings from breaking
Prevents premature wear on the nut and saddle