* Assembly(10-30mm)
    1pc forcing screw (1/4"-20t x l102mm scm415 hrc42±3°)
    1pc beam
    2pc main rod(hex bar 8mm x l85mm x 1/4"-20t s45c)
    2pc eztension rod(hex bar 8mm x l40mm x1/4" x 20t s45c)
    1pc bearing separator spread 10~30mm (scm415 hrc 42°±3 )
    2pc jaw (l82mm scm415 hrc 42°±3)