Granite marble engineered stone countertop polishing tools 4" snail-lock 5-step

step 1 & 2 are metal bonded for moderate further grinding to remove swirls and coarsely polishing. 

these two steps are used to be more convenience for further resin polishing.

step 3,4,5 are resin bonded for step-by-step surfaces/edges polishing;

Buff is the extra step for further lifting the shine