The main advantage is stated as being the fact you don't need a tool to fit the oiler. If you just use the standard oiler fitment then that simply fits into the vertical pillar and there is no tool needed. The magnet holds the oiler tank on place on the rail, but why do you want to put the oiler tank on the rail?? As stated, it tends to shake use as the T nuts simply don't fix it in place -hence the advice to use Loktite otherwise the magnet undoes and the oiler falls on the chain. Not good. The main problem is that if you sit the oiler tank on the magnet on the rail then the oiler is often very close to the bar and the hose coils up and the oil flow is reduced and there is far more risk that the hose will hit the chain. Basically this is a mod that is simply not needed. It is a complete waste of your money.