I know the save DC on Kinetisits blast but What is the role.

[Half Orc Tengu]

So I was reading to find the new Infusion I'm going to get at lv 5 and one of the infusions said it does not require the save against the kinetic blast like is normally required.
I have read that thing backwards and forwards a million times and I hadn't read anything about a save against a kinetic blast. I found some information on it in at the bottom of the infusions section. Turns out a successful save negates damage from the blast entirely and a second save role is required to negate the effect of the infusion.

Save DC for a blast is 10+1/2 caster level+ con modifier.
In my case 16 but what is someone rolling to beat a 16.

[Orfamay Quest]

The generic kineticist blast doesn't have a save. The kineticist rolls to hit.

[CalethosVB]

Saves against a blast are Reflex vs. Form Infusions first (10 + 1/2 your Kineticist level (minimum 1) + your Dex). If you save against that, you do not suffer the effects of the Substance Infusion (Fortitude DC 10 + 1/2 your Kineticist level (minimum 1) + your Con). If the blast does not require a Reflex save, then we skip the initial save and go straight to the save versus the Substance Infusion. Not all Infusions require a saving throw. AoE infusions will almost always require a Reflex save, and Substance Infusions that apply a numerical penalty to your character or have another debilitating rider on effect (see Disintegrating Infusion) will generally have a Fortitude save, but not always. Combat maneuvers infusions do not require a save against that combat maneuver.

A blast is only completely negated if the Infusion it uses says it is. Otherwise, blast damage is reduced by 1/2 or 1/4 standard usually, unless the target has something like Evasion.

But no, Kinetic Blasts by themselves carry no DC to avoid. It's the Infusions that do.