1、NON SAG: Hard anodized aluminum plate that won't sag from heavy router suspension, made of aluminum alloy for durability 2、ACCURATE HOLE DRILLING: Dual scales on the surface make the plate easy to align the fence and keep perpendicular to the table, easy to drill holes and install any router accurately 3、EASY FOR CENTERING: This is a convenient center hole bushing for centering router on drilled hole, provide great convenience for your life 4、CORROSION RESISTANT ALUMINUM ALLOY: Router table insert plate is made of excellent aluminum alloy material, light weight, possess good strength and good corrosion resistance 5、MAIN PURPOSE: Trimming machine flip board can be used for the CCW function of the trimmer, useful and practical