OTC 4104A 10-Ton Single-Acting, Spring-Return Ram with Half Coupler - 6-1/8" Stroke - OTC's design ensures positive, leak-resistant sealing throughout all pressure ranges, yet full piston return characteristics are maintained. Additional bearing surface has been designed into these units to effectively resist the punishing stress exerted by off-center loads. Depending on capacity, this ram can handle a variety of bending and straightening jobs, construction maintenance applications, pressing operations, body and frame straightening, and rear housing and axle correction.