DAMO 4” wet pads have three different types, which are Regular, Extra Thick, and Ultra Thick.
The 4” Wet Polishing Pads in Regular are the conventional and most popular pads. If you want to polish very abrasive materials, or want the pads to be longer lasting, we recommend you to use the Extra Thick or Ultra Thick pads in order to ensure the longer lasting life. Especially with the lower grit pads, they tend to be used up much quicker than the higher grit pads. Extra Thick pads are long-lasting and last up to 1.5X in polishing jobs versus Regular pads. Ultra Thick pads are super long-lasting and last up to 2X in polishing jobs versus Regular pads.