Best auto inject for Trimix?

[NJWB62]

Hi everyone, new today and just asking for your patience. Curious for opinions about the best auto inject device for Trimix. Very intimidating to stick a needle in yourself down there and I’d like to gather opinions about your experience if you have one.

Thanks

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[Old Guy]

I was started with an autoinjector. Used it the entire time I used Trimix because I couldn't bring myself up to sticking a needle in my penis. I can't remember the brand name.
My thought is it pushes the mix in too fast. You really have to hold the thing tight against your shaft in a good spot and be ready because it was quick. Needle length is important using an autoinjector. I believe it needs to be a bit longer than what guys use for a manual injection.