This is our new Hardin industrial grade variable speed wet polisher / grinder. This professional unit is equipped with a 950-Watt 8.29-Amp variable speed motor and features a variable speed dial for optimal control. You can operate from 2,000-4,000-RPM. Optimal polishing results are achieved at 2500-RPM. After shaping the edge of your slab (profile wheel not included), you’ll most likely want to polish it so that it matches the top of the countertop. This Hardin VSP polishing kit with granite and marble pads is the ideal kit for this application. The pads in this kit are not general or all purpose polishing pads. They are professional grade 4 diameter X 3MM thick granite and marble pads manufactured with a softer bond resin that releases the diamonds at the proper rate for hard materials. Start the polishing process with the lower-Grit diamond pads and work your way up consecutively to the last one to achieve that factory shine. You’ll want to take care with the 50 and 100-Grit pads. They are the most aggressive-Grit pads, you can easily chance the shape of your material. This unit is equipped with a 5-Feet 1/4-Inch water line that is positioned under the polisher. The end comes with a brass 5/8-Inchcoupling to thread onto a common garden water hose. The standardized 5/8-11 UNC spindle thread makes it compatible with most attachments on the market. Built-in GFCI (circuit breaker) protects the operator. Also included with this unit is a bail handle (D handle), side handle, spindle wrench, and extra carbon brushes.