... Photoelectric Edge Detector M20 one knife-locking base BT40one set of 4,5,6,8,10 inner hexagonal wrenches two sets ... of 12~14,17~19 solid wrenchestwo fusible cores : 4A,6Afour Φ ... ratio, will have a variety of configurations, multiple functions and suitable for different levels of users who expect different Performance-Cost ratio.2 ...