Machined and polished cylinders with die-cut threads provide non-abrasive leak-free, durable performance. Fabricated from hard-cast steel with heat treated critical stress areas. Unique cross-type forged release valve assures positive load control. Hydraulic system is protected from internal damage by a by-pass mechanism. 11" minimum height, 18" maximum height, 96 lbs operating force, 2-1/2" saddle, full power in vertical or horizontal position. 56lbs.