ALPINE ARCHERY INC Power Loc 4 Arrow Quiver Lost AT Camo The Power Loc arrow gripper has been designed as a two stage gripper that will grip even the smallest arrow shaft. Hood features a full urethane foam liner to protect both mechanical and standard broadhead. The Power Loc has an innovative roll and lock latch to prevent accidental dismounting. Mass weight: 6.75 oz. Overall weight: 11.5.