General Purpose C Series 5-100 Tons Single-Acting, Spring-Return Rugged, high quality cylinder used for lifting and pressing Threaded End CBT Series 5-25 Tons Single-Acting, Spring-Return Threaded piston rod end and base threads accommodate accessories and adapters. Low Profile RLS Series 5-150 Tons Single-Acting, Spring-Return Ideal for confined areas from 1 5/8" to 4" clearance. Shorty RSS Series 10-250 Tons Single-Acting, Spring-Return & Double-Acting Ideal for confined areas from 3 1/2" to 11 7/16" clearance. Tandem Center Hole RT Series 17 1/2-100 Tons Single-Acting, Spring-Return & Double-Acting Ideal for pulling and pressing. Pulling RP Series 2 & 5 Tons Single-Acting, Spring-Return Designed for pulling and tensioning & Double-Acting Ideal for pulling and pressing. High Tonnage RD Series 10-500 Tons High Cycle, Double-Acting, Hydraulic-Return High tonnage premium design for high cycle life.