Item Type: Parallel Guide Rail System_x000D_Material: Aluminum alloy_x000D_Guide Rail: Approx. 300mm / 11.8in / piece_x000D_Guide Rail Clamp Angle: 90 1Versatile: This guide helps you guide the wood while sawing and safely and easily take inventory on planers, molding machines, table saws or wood pickers. 2Easy to Use: The limit block of the parallel track can be adjusted by loosening the large screw and then the small screw, so that the limit block can be adjusted left and right. 3Aluminum Alloy Material: The fixed guide of circular saw is made of aluminum alloy material, which is wear resistant and durable and will not get dirty or fade. 4Clear Scale: The accurately machined drill guide kit is designed with a accuracy scale on the body that can be adjusted to the thickness of the plate. 5Reasonable Design: The back plate is smooth without jamming to improve your work efficiency, and the locking design can fix the slicing distance with one key to reduce operation errors.8 x Guide Rail2 x Slider4 x Limiter6 x Sliding Block2 x Connecting Plate2 x Wrench16 x Screw4 x Plug4 x Nut4 x Gasket