<https://abrasive-systems.co.uk/abrasive-discs/velcro-plain-self-adhesive-discs/paper-grip-sanding-discs/330gr-180-sp09#primaryimage>
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"CA330 Aluminium Oxide Velcro Grip Discs 180mm Diameter with 8 holes"
<https://abrasive-systems.co.uk/abrasive-discs/velcro-plain-self-adhesive-discs/paper-grip-sanding-discs/330gr-180-sp09>