Allied Construction Products introduces the Rammer in-Series hydraulic impact hammer. The non-breakable hydraulic hammer is a trapezoidal tool that can be mounted on mini-excavators, skid steers and backhoes. The in-Series hammers range from a working weight of 152 pounds to 453 pounds, offer operating pressures from 2,030 psi to 2,175 psi, oil flows from 3 gpm to 18 gpm and blows per minute from 1,880 to 2,100.