I use bottles like these to apply very small drops of various oils to pivot points, lockbar stabilizers, and to lubricate my guns:
They work great in the shop, and the screw caps are great, but the tip caps are friction fit and not very secure. One thing I love about them is that you have to cut the tip to open it, so you can get exactly the aperture size you want, you aren't stuck with what the manufacturer decided.
I've used micro oilers likethe aluminum General Tools Precision oiler pen, but it really isn't any more secure for portable use, and the plastic bottles work a lot better in pretty much every way.
What I want is something just like the plastic bottles I use, but with a screw-on tip cap. Failing that, any design no larger, just as precise as one of these with a needle hole, and secure enough to roll around in a portable toolbox or bug out bag and be unlikely to leak.
Any suggestions?

They work great in the shop, and the screw caps are great, but the tip caps are friction fit and not very secure. One thing I love about them is that you have to cut the tip to open it, so you can get exactly the aperture size you want, you aren't stuck with what the manufacturer decided.
I've used micro oilers likethe aluminum General Tools Precision oiler pen, but it really isn't any more secure for portable use, and the plastic bottles work a lot better in pretty much every way.
What I want is something just like the plastic bottles I use, but with a screw-on tip cap. Failing that, any design no larger, just as precise as one of these with a needle hole, and secure enough to roll around in a portable toolbox or bug out bag and be unlikely to leak.
Any suggestions?