How long are back loaded slin pins good for?

[Burntoutn3rd]

i’ve never tried luer lock slin pins honestly but this is a great idea for ever dayers like myself

I use Luerlock 3ml tubes with 27g pins, works friggin great.

 

[ksm2]

Damn i would really love to backload for a week but it just doesn't feel right.

Thinking about trying these refillable pens with a 29g needle for tren ace and test prop. Anyone done this? Are the plungers/stoppers any better?

 

[rockyraccoon]

Damn i would really love to backload for a week but it just doesn't feel right.

Thinking about trying these refillable pens with a 29g needle for tren ace and test prop. Anyone done this? Are the plungers/stoppers any better?

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View attachment 287665

Yes, I've done this for travel purposes. Excellent stealth and convenience

 

[Ghoul]

Yes, I've done this for travel purposes. Excellent stealth and convenience

Surprised there's enough oomph in the spring to push an oil.