What size syringe and needle for ball python injections.

Hello looking for what size syringe and needle used for ball python antibiotics and such. Looked on the internet but not much information is listed. I know different meds require different gauge size needle because of consistency. Just looking for a detailed description on Medications and needle size to administer. Thank you for your help. Also i take my snake to the vet, i'm just looking to purchase the syringes my self and learn how to administer antibiotics and anti parasitic meds. I will still be running fecal samples and if all necessary still take snakes to the vet.