The Clutch is a tough pen made for tough jobs. Its hefty hexagonal finger grip design ensures that you will maintain a solid grasp on the pen even when wearing thick gloves, and its composition of black anodized aluminum provides both a sturdy and light-weight feel in hand.  The hermetically sealed Fisher pressurized ink cartridge (SPR) refill is designed to exist in a chamber that is not affected by air or moisture. The result is a magical pen that can write under any weather conditions, with or without gravity, and in any direction without drying out or leaking.