Jet sand rammers in bench and floor models. The bench models deliver fast, powerful blows for ramming small, medium and large forms. The floor models deliver maximum power with slow, powerful blows that efficiently and quickly compact all types of backfill. Each model is ergonomically designed providing greater ease of handling with reduced operator fatigue. Features. Front end seal protect the piston from excessive dirt and debris extending tool life. Maximum power with slow, powerful blows for compacting large sand molds. Highly efficient way to quickly compact all types of backfill and sand. All steel cylinder housing for increased durability. Heavyduty, industry proven valve designSpecifications. Butt Type Rubber. Piston Stroke 2.56. Bore Size 0.85. Weight 8.27 lbs