This 50mm four-piece grinder is made out of aircraft-grade aluminum.

This 42mm grinder is made out of aircraft-grade aluminum.

This 32mm four-piece grinder is made out of aircraft-grade aluminum.

This 3" Sharpstone grinder is made out of aircraft-grade aluminum.

This 2.5" Sharpstone grinder is made out of aircraft-grade aluminum.

This 2.2" Sharpstone grinder is made out of aircraft-grade aluminum.

This 2.25" matte Diamond Grind is made out of aircraft-grade aluminum in the USA.

This 3.5" Diamond Grind is made out of aircraft-grade aluminum in the USA.

This 2.5" Diamond Grind is made out of aircraft-grade aluminum in the USA.

This 2" Diamond Grind is made out of aircraft-grade aluminum in the USA.