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NEIKO 10649A Micro Air Die Grinder | 1/8" (3mm) Capacity | Pencil Type | 54,000 RPM | For Cleaning Dies, Rotors, Backing Plates, Brake Pads, Mounts, Etc. - Power Straight Grinders - Amazon.com
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Amazon.com: Micro Speed Reduction Motor Mini Gear Mini dc DIY Toy Electric , 40/60/28/150/300/110 RPM, Micro N20 Gear , Slow Speed Metal Gearbox Reducer DIY Sparing Parts (Speed(RPM) : A3.28RPM) ( Size :
