Will tsa let me bring this in my carry-on or will i need to check it?

I'm an airline pilot. I've carried a different, but similar, tactical pen (as well as a SureFire tactical flashlight) with me for almost a decade now with no issues at TSA or any international location. In my experience, a bluetooth travel speaker garners far more attention from airport security than one of these. I've never even been asked to remove either from my bag for inspection. Was once searched and shaken down for a bribe on the street by corrupt cops in Africa and they didn't take it from me.

Where can i get ink refills, and is there a specific type of refill needed

Ink infills for any Ankaka pen: https://www.amazon.com/dp/B09796LYKP

What product is it made of?

The body is made of ULTRA-STRONG AIRCRAFT ALUMINUM. The defense tip is made of extremely hard super alloy called tungsten carbide, it can break metal, ceramic and glass.

ASIN	B07RDGN4HD
Best Sellers Rank	#76,765 in Office Products ( See Top 100 in Office Products ) #3,657 in Stick Ballpoint Pens
Brand	Ankaka
Colour	black
Folded Size	around 6 inches
Included Components	5 inks (1 pre-installed) and 2 sets of batteries (1 pre-installed), Flashlight, Multitool, Pen., Tips for self-defense, Torch, flashlight, pen
Item Weight	91 g
Item model number	C90505
Manufacturer	Ankaka
Material	Aluminium
Net Quantity	1.0 Count
Number of Pieces	11
Package Dimensions	18.01 x 5.69 x 1.78 cm; 91 g

The Most Charged 6 in 1 Tactical Pen: Solves Other Brands' Weaknesses, Self Defense Tip + Flashlight + Ballpoint Pen + Bottle Opener + Screwdriver + Hex Key 5

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