The 750O series, which are manufactured by Olmec, are double-acting block cylinders with o-ring seals. They have the capacity to operate in various operations that have peak production cycles for pressing, lifting, bending, clamping, and punching. The medium is delivered ti the cylinder via passages in the fixing plate which has inlets ports located at the sides, or located from behind. All of the series are integrated with a piston made of hardened steel and are encased in a body treated with nitride.