Diamond Way Laser Welded Concrete Blade 5"
https://diamondway.com.au/shop/318974-diamond-way-laser-welded-concrete-blade-5-18730
https://diamondway.com.au/web/image/product.template/18730/image_1920?unique=d170348
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Laser Welded Concrete Blade. Premium blade for cutting medium to hard conrete. Good cutting speed and long life. (Dry grinding) Bore size 22.2mm