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09-1999 5" RANDOM ORBITAL SANDER 5" RANDOM ORBITAL SANDER V.S. Model BO5021 5" RANDOM ORBITAL SANDER V.S. KIT Model BO5020 Model BO5021K...
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Above parts are completely interchangeable To Prevent excess rotation when the Sander is NO LOAD, please change to Type 2 Ball Bearing which is packed with a thinner grease. There is no visual difference between Type 1 & Type 2 Ball Bearings.