Knixxo U-100 0.5cc with 31 Gauge 1/2 inch Syringe for Industrial Production and Manufacturing, Individually Sealed 20 Pack

I had tried some of the luer lock 1ml 25ga syringes and found that those are not the best for trt because you end up wasting about 0.02-0.04ml per injection or about .1-.2ml per 10 injections. This equates to about 8-16mg lost on each injection. Or about 80-160mg per 10 injections. With a 200mg/ml solution it would be 4-8mg lost per injection using luer lock type syringes/neeedles.These insulin syringes waste virtually nothing, 0, as the needle goes straight into the oil, without the gap. So there is no medicine wasted. These are great specially at a lower body fat, which you should be at if you are using TRT.Although these take a little while to pull the oil into syringe, I was able to use the same syringe and needle to inject with no pain and less scar tissue.

Strictly used to fill syringe top bottles. Then tossed.

These syringes are indeed sterile, for any of those out there wondering. They're also accurate to the unit for insulin use .I use them for my daily insulin injections. They're a little longer than the needles I'm accustomed to, but they're much easier to acquire. You don't have to go to the pharmacy or have a prescription for these. And to handle the length I just don't insert the needle in all the way.The gauge is the exact same size as my usual syringe so there's no additional pain there. Overall I like these syringes very much and they're so easy to come by that I don't think I'll be back using pharmaceutical syringes again.

These syringes work great. I was not sure if they would be too small for my injections but they are not and they go in nice and smooth. Plunger works with ease. Each one is individually wrapped which is nice and definitely sanitary.

The syringes are fine - it's hard to really "review" much about them. They seem as well made as any others, and in the 100 pack they are at a good price point.

These insulin syringes are high quality and medical grade, but be careful! They are the ones with small (.5ml) barrels.