The Big Red 22-pc. Hydraulic Puller Set is suitable for agricultural, industrial and garage use. Hydraulic ram, 7.5–10 ton hydraulic ram center bar 1 x 1.96in. ram extension 1 x 3.94in. ram extension 4in. puller arm, 6in. puller arm, 8in. puller arm (3 ea.) Single, twin and triple heads for puller Pulling bolt device with nut (2 ea.) Pulling bolt extension (2 ea.) 4in. separator Grooved center nut