Bench sanders and lapidary sanders require puncture-free hook-and-loop discs because suction does not pass through them.
The diameter 230 mm corresponds to the stationary sanding machines Holzmann BT1220, Bernardo BDSM230 and Bernardo BDSM230C.
This gives an excellent quality of work and rendering and so that your consumable does not wear out quickly as well as in the standard range for the less demanding.
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Abrasive disc paper support diameter 200 mm for sander polishers, orbital sander
Hook and Loop disc diameter 230 mm grit 120 for sander polishers, orbital sander
Hook and Loop disc diameter 230 mm grit 80 for sander polishers, orbital sander
Hook and Loop disc diameter 230 mm grit 120 for sander polishers, orbital sander