THICK AND DURABLE: This angle grinder guard is made of high-quality iron, the surface treatment is smooth, the part 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 42 mm with a screw buckle design. You can adjust the inner diameter with screws, which can effectively improve the strength of the cup. The 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. Keep your equipment as good as new. TWO SIZES FOR DIFFERENT CUTTING BLADES: This angle grinder guard set includes two different sizes of guards with outer diameters of 125 mm/4.92 inches and 115 mm. You can choose the appropriate guard depending on the size of the cutting blades. WIDE APPLICATION: This black cutting machine base can be widely used in construction, automotive, marine, communication, steel, light industry and other industries to provide your angle grinder with a thicker and more durable protection.