1、Excellent Aluminum Alloy Material: This circular saw track set is made of excellent quality aluminum alloy material, which is sturdy and wear resistant with rust and erosion resistant properties, while providing professional grade durability for long term use. 2、Large Contact Area Screws: This woodworking track saw guide rail features large contact area screws that allow a wrench to pass through the screws at their intended location without crimping the rail during operation. 3、Easy To Operate: The parallel rail limit block of this parallel guide rail system is adjustable. You just need to loosen the big screw first, then loosen the small screw to adjust the limit block left and right. 4、Sleek Back Plate: This fixed guide rail bracket has a sleek back plate that is not stuck, sleek slicing during operation and improved efficiency, with a locking design that fixes the slicing distance with one key and reduces operating errors. 5、Wide Application: This woodworking aluminum guide rail joining set has a wide range of applications and can be used for woodworking, furniture processing, handicrafts and DIY, etc.