1. Itcan make thread on rebar end by cold rolling, which will enlarge the strength of the threaded rebar. 2. Easy operation: Each size rebar with one rolling head, changing the rolling head size when rolling the different diameter rebars.Rolling roller model the least size, small size, middle size, large size the largest size The thread pitch for the rolling screw thread (mm): 2.0 2.5 3.0 Steel bar standard : 16, 18, 20, 22, 25, 28, 32, 36, 40 The whole machine weight: 485Kg The power of master electric motor: 4.0KW The power of water pump electric motor 0.09KW The work voltage 380V 50Hz The rotate speed of reducer 41 Dimension(mm) 1000*500*1000mm Work Voltage 380V 50HzOutput Rotate Speed of Reducer 62 R. P. MDimension 1000 *500 *1000mm Customer's special demand is available.