• EXCELLENT FEATURES: Designed to have standard right angle, this circular saw guide rail ensures higher accuracy for woodworking. Circular saw guide rail system can quickly and accurately set the slicing or milling angle, which can make precise and repeatable 90 degree cuts with the guide rail, no need to readjust, you can use it for daily use or work, which can give you for a perfect experience.
• DURABLE MATERIAL: 340mm track saw square right angle is made of high-quality aluminum alloy and stainless steel material, which has a stable structure and is not easy to damage and bend, rustproof and durable for long term use.
• EASY TO USE: The stainless steel safety buckle of 90 degree right angle guide rail clamp can help you fix the right angle rail, which is fully self-aligning, the contact edge is easy to align with the edge of the workpiece, which can assist you to fasten the right angle guide rail for quick & accurate set the slicing and milling angle; it can meet your most engraving needs with safe operation.
• EASY TO INSTALL: 340mm right angle circular saw guide rail is easy to use, with simple installation and removal steps, you can complete the installation in just a few steps, whether you are a professional woodworker or a beginner, electric circular saw track is essential.
• UNIQUE DESIGN: 90 degree saw guide for circular saw has a hollow design, light in weight and compact in size, both the daily storage and carrying are very convenient.

Please don't ask me about this item, I don't know anything about tools....SORRY!

Thanks for looking!