I've made some adjustments to a design I found on Kickstarter. Given the current situation of the pandemic, it's crucial to get the tools into the hands of those who need them as soon as possible.
When conditions permit, it is recommended to use copper or antibacterial PLA for printing. It should be noted that 3D-printed products are prone to the growth of bacteria and microorganisms. Please be sure to clean and disinfect them frequently, and store and handle them with care.

I specially designed a gun holster for this tool to effectively isolate the contact surface and avoid the risk of contamination caused by accidental touch.

The tool uses a 50% cubic filling density for printing, without the need to add support structures.

For the gun holster part, a support structure was used for printing.