Durable Material: track saw square guide is made of aluminum alloy and stainless steel material, and has the characteristics of not easy to damage or bend, has a long service time. Compatibility: This Track rail clamp, which is compatible with Track Saws, is for Electric Circular Saw Engraving Machine. Size: Overall length 340mm, long contact edge for easy aligning with workpiece edges. 90 Degree Angle: Our 90 angle design guide saw owns the safety buckle, which can assist you to fasten the right angle guide rail for quick & accurate set the slicing and milling angle. Convenient to Use: Easy install and disassemble, precise cutting. Only takes a few step to complete the installation, without too much complicated step.