Abstract: A straight line impact device is provided having a central grasping portion having finger and thumb indentations for either hand and being narrower than enlarged impact end areas having impact heads to thus provide a positive grip for a hand grasping the central area while also shielding the hand from slippage and missed impact on the impact areas. The enlarged portion is formed as a hexagon to prevent the rolling of the device and has replaceable impact heads of differing materials.