Profile: Barreto Mfg., Inc. is involved in design & manufacture of all hydraulic tillers and trenchers. Our products include tillers, trenchers, trailers, grader rakes & accessories. Our machines are designed in parametric modeling design technology. Our 912 trencher serves a landscape contractor with smaller trenching applications, such as sprinkler systems. Our grader rake works for finish grading after rough grading is done with a tractor bucket or a skid steer.