Specs Cleverly disguised as a large bolt, the safe can be “hidden in plain sight” and it will never, ever be found by a burglarThe actual working nut and threaded bolt is constructed of solid, rust-resistant stainless steel and includes a washerWhen you unscrew the top of the hex-head bolt, a hidden compartment is revealed which is perfect for hiding gem stonesThe bolt is 2” in overall length and the tube-shaped hidden compartment is approximately a 2/5” in diameter