The best way to determine the accuracy of your rifle and ammunition is to shoot them from a solid bench with a quality shooting rest. The Rock Deluxe Front rest is the right tool for nailing your target over and over. The Rock helps eliminate the "human factor" in shooting and will help you shoot tighter groups. Filled standard rear bag included.Features: Wide and stable footprint dispered over 8.5 lb, 13 inches diameter base7/8 inches diameter steel post provides smooth and quick elevation adjustments up to 8-1/4 inches heightUse the 3 leveling feet to rest on nearly any surfaceForend stop ensures consistent stock place from shot-to-shotForend cradle is designed to accept all caldwell deluxe universal front rest bags