BD-400E Economy Diamond Polishing Discs
BD-400E Polishing Discs

Four inch economy grade resin diamond polishing discs.

Grit Part #
50 166841
100 166842
200 166843
400 166844
800 166845
1,500 166846
3000 166847

Important Break-In Procedure
Diamond resin discs are shiny when new. This shine must disappear in order for the discs to perform their best, especially with the finer grits (400 and up). To do this, run any new disc on a rough surface - such as granite, sandstone or concrete - always making sure there is enough coolant (water). This will force the outer bond to be eroded, leaving the diamonds properly exposed for polishing. They will gradually perform even better as normal wear sets in.