Features and Benefits: Quick 1/2 turn on, 1/2 turn off Roloc disc fastening system Use with 3M Roloc Disc Pad 05539 Best used on steel parts Maximum operating speed: 25,000 2" Medium Maroon 25 per boxUsed to quickly remove cut cork or paper gaskets and form-in-place gasket materials prior to the assembling of power train components engine blocks, heads, and valve : New out of box defects