The Dynabrade 100,000 RPM turbine-driven pencil grinder offers precision deburring and finishing for a variety of surfaces. 100,000 RPM speed provides a better cut rate ideal for use on metals, alloys, graphite, wood, glass and resin with a high glass content. The model 51810 features a 1/8" collet that accepts carbide burrs, rotary files, mounted points, wheels and discs. Each grinder features ceramic bearings for superior heat resistance, and rear exhaust.
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Very expensive and not long lasting
I purchased 4 of these. They have poor quality cermamic bearings that don't last. Forget about the lifetime warranty. They consider the bearing as a wearable part and is not covered. They did replace them once but then consider the tool as refurbished and is not covered. cost for new bearing a whopping $204.00. ALL 4 have been sent back at least one time. Some 2 or three times. The first went bad after 2 months. These are used about an hour a day for light deburring. No oil was used as they specify and we have an air dryer on our compressor. Do not recommend buying these.
Best hand piece yet
Bottom line, this is the best hand piece I've utilized. It is well balanced and an extraordinarily light. The rubberized tip is a great benefit for extended working periods. I have used a Dotco grinder, but this product is superior and cheaper! I cannot comment on it's lasting ability, but for the short time it has been used, it is a great product with a fantastic warranty.