A properly polished propeller is a necessity to reduce slippage and increase efficient vessel operation. G&G Marine uses a variety of diamond discs to polish your propeller to Rubert "A" (as achievable) on the leading / trailing edges down the .8 radius line on both pressure / relief sides and polish to Rubert "B" (as achievable) on the flats, roots and hub. All propeller polishing tasks include a color video inspection of before and after polishing.