Makita 199232-5 Guide Rail Adapter, Circular SawsMakita 199232 5 The Sub Compact 6 1 2 Circular Saw Guide Rail Adapter is an ideal accessory for precise and accurate cuts when used with Makita Sub Compact Circular Saws and Guide Rails (sold separately). The Adapter allows Makita 18V Sub Compact LXT Circular Saws to be used with Makita 55 and 118 Guide Rails, as well as select competitor rails (all sold separately). Contractors are learning that cutting with a circular saw and compatible guide rail