THICK AND DURABLE：This angle grinder protective cover is made of high-quality iron material, the surface treatment is smooth, the workpiece is wear-resistant, and the dust cover is safer. The thick iron ring design makes it more durable and can better protect the angle grinder. ADJUSTABLE IRON RING DESIGN: The inner diameter of this iron ring is 42mm with a screw buckle design. You adjust the inner diameter by screws, which can effectively improve the firmness of the cutting. High stability makes your cutting work more efficient and safer. QUICK INSTALLATION AND REMOVAL: This angle grinder guard can be installed and removed in a short time and is an ideal replacement for 115 and 125 angle grinder guards to keep your equipment as new. TWO SIZES TO FIT DIFFERENT CUTTING BLADES: This angle grinder cover set contains two different size covers with outer diameters of 125mm/4.92in and 135mm/5.32in. You can choose the corresponding protective cover according to the different sizes of cutting