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

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

This 100mm four-piece grinder is made out of aircraft-grade aluminum.

This 63mm four-piece grinder is made out of aircraft-grade aluminum.

This 56mm four-piece grinder is made out of aircraft-grade aluminum.

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