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The Model YN -09A is the top of the line ultimate 'Dual Position' drill sharpener grinder that has 5/64" ~ 1 1/4" sharpening capacity (2-32 mm) drill point angles from 90 ~ 140 degrees, 5 degree lip clearance angle, handles most drill materials with optional wheels for carbide drills, comes with 31 precision ER style collets for precision drill locatiing, works on 110 Volt 3 prong service, grinding torque of 6000 lbs.