Let's be honest, 20g is way too much. At least in Europe the common gauge for deep IM for glutes is 21g, which is already a no-no for almost any of us, imagine using 20g.
Just draw with 25g, more than enough for MCT oils, I have even drawed thick olive oil with it from amps.
These images are from another popular source in Meso but very similar with those from Liska in terms of quality and on point products.
29g fixed needle syringe to draw and pin. This vial is almost finished and I have used it for 3 months, 43 pins, EoD schedule.