RancilioSteam Knob for Silvia Version 3

Does this include the clip that holds it to the steam valve?

will this fit the miss Silvia model

Is it any easier to turn the version on 1 & 2, (i.e. greater radius for more leverage)? My wife frequently struggles to turn the original.

Does this replace the steam knob on a Silvia V1 without modification? Does not look long enough.