Borka® bits are made of S2 tool steel and are known for exceptional toughness and resistance to breakage.
 
Designed and manufactured with the same attention to detail that defines all Borka® Tools, the 1.5mm hex bit integrates seamlessly into their professional-grade torque driver systems.
Use Case: Precision shooters, military armorers, and gunsmiths seeking reliability and compatibility with metric fasteners.
Recommended For: Anyone working regularly with European firearms, match-grade setups, or metric optics mounts.
 
1. Imported Firearms & Accessories (Especially European)
Application: Used across European brands for mounting, adjustments, and component retention.
Brands:
CZ, Sig Sauer (Europe), Walther, H&K, Steyr
European-made red dots, mounts, and night vision systems
Why 1.5mm?: These manufacturers design to metric standards, where 1.5mm replaces common U.S. fractional equivalents like 1/16″.
2. Trigger Shoe Screws
Application: Secures adjustable trigger shoes or modular trigger faceplates in competition pistols or rifles.
Common Platforms:
Custom 1911/2011
Shadow 2
SIG P320 aftermarket triggers
Purpose: Enables precise placement and secure fit under repeated cycling and recoil.
3. Adjustable Gas System Settings
Application: Adjusts gas metering screws or valves in competition and match rifles with tunable gas blocks or adjustable piston systems.
Examples:
JP Enterprises gas systems
Ruger Precision Rifle with adjustable gas block
Some AK-style DMRs
Why 1.5mm?: Offers micro-level adjustment to tune recoil impulse and cycling for precision shooting.