Require 5/16 power shank bits

[JohnTools]

I am looking to source 5/16 Hex Power Shank Torx bits to warranty pieces broken in a Monster Tools MSTCHT1452.

Can anybody please tell me who sold this set originally.
And where could I source replacement bits.

 

[shockwave]

You might look at vin or wiha bits

But monster is a truck only brand geared for an alternative for tool dealers most dealers have access to them but most impact screwdrivers use 5/16 bits

I actually bought a 1/2 ph3 socket just for use on screws for rotors on the monster 1/2 impact screwdriver

 

[jim faston]

It looks like this ATD set:
https://www.amazon.com/dp/B01LFO3RGI/?tag=atomicindus08-20

I don't know if they sell individual pieces.