Clean, restore, smooth, and deburr metal surfaces with JCB's 115mm (4 1/2)aluminium oxide metal grinding discs. 5 x durable grinding discs is made from resin-bonded glass fibre, coated with aluminium oxide grit, making them perfect for various metal-grinding tasks such as cleaning tools, deburring surfaces, sharpening edges, and smoothing weld joints. Each disc features a standard 22.23mm bore, ensuring compatibility with any angle grinder fitted with a 115mm (4 1/2'') guard.