Intermuscular Injection Syringe Tool

Backstory:
I recently had to start giving myself intermuscular injections due to thyroid problems leading to low testosterone. Let me tell you, I REALLY wasn't a fan of trying to aim and stick the needle in by myself. Not controlled or accurate enough for my anxiety. I decided to make a device to make it a breeze to give myself an injection. Problem was, the BD Luer-Lok from my pharmacy were expensive. Searching around for bulk syringes, I found the Yalomi brand that make cheaper quality bulk syringes. I purchased a box and got to work. This is the final culmination of all my efforts and it works wonders!

Features:
-Easy to print and use.
-Has multiple rubber band notches for compatibility with whatever bands you have laying around.
-Super easy to use. 

Supplies Used with this tool:
100pc Yalomi 1mL Luer Lock Syringes - https://a.co/d/caX3mKB 
100pc SHAOTONG 18 Gauge 1.5" Luer Lock Needles (for medication uptake) - https://a.co/d/0QVagtR
100pc SHAOTONG 23 Gauge 1.5" Luer Lock Needles (for injection) - https://a.co/d/1ag6Rbh
1000pc Hair Rubber Bands (small) - https://a.co/d/e52jnak

Print Settings and Orientation:
Default 0.2mm layer height is fine, printed mine in PLA with 15% infill. 
syringe_wings.stl - You need to print two of these, with full supports in the current orientation.
syringe_tool_inner.stl - Only need one of these, no supports needed.
syringe_tool_outter.stl - Needs supports everywhere, in current orientation. 
coupler_small.stl - Needs supports from build plate, in current orientation.
coupler_large.stl - Needs supports from build plate, in current orientation. 

Note:
The small coupler will give you the smallest gap allowing for a full penetration of the needle. 
The large coupler will give you a larger gap so you don't need to sink the needle as deep. 
The support material can be a pain to clear out of the wings gap that the syringe wings tuck into. FYI.

This is v1.0. That means there could be changes coming based on how well it works for everyone else and am open to suggestions. Please comment if you'd like to see any other features added.