Zec Discs Plastic Backed 180mm 16 Grit 5pcs
https://diamondway.com.au/shop/318883-zec-discs-plastic-backed-180mm-16-grit-5pcs-18639
https://diamondway.com.au/web/image/product.template/18639/image_1920?unique=a282528
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ZEC Abrasive Disc Plastic with support Backup Pad. Ideal for Grinding and Dressing concrete Applications: Concrete,Rubberised Membranes,Paint,Masony,Fibreglass,Aluminium.