When everything goes horribly wrong, trust your Rite in the Rain Metal Readiness Tactical Pen. FeaturesGLASS BREAKER- The hardened, chisel steel point can be used to shatter glass at a moment's notice. Aluminum barrel.BOLT-ACTION CLICKER- Smooth and satisfying bolt action mechanism provides a unique experience.EXTREME CONDITIONS- Permanent ink writes through water, sweat, grease, and mud without clumping or smearing.Size: 5.6"L x .765"W x .44"D