Norco Threaded Adapter with a 12.5-ton capacity is for use on rams with a 25-ton capacity. This threaded adapter screws into the tops of rams to provide a threaded connection for other attachments, featuring a 2 x 11-1/2 male connection. Note: When cylinders are used with maintenance set attachments or components, the maximum system pressure must be limited to half the rated pressure. Also, local sales taxes will be applied to ALL Norco orders shipped to California.