Made of Hardened Tool Steel and precisely grounded to match a concentric run out of +/-0.02 mm 2 Mt Shank & 1-3/4" Body Diameter. High quality ball bearings & taper bearing combination absorbs both radial & thrusts load to guarantee smooth movement Heavy duty triple sealed for life dust proofed bearings Perfect for both Wood turning & metal working This Revolving Centre is used on mini lathes and wood working lathes Recommended for Applications upto Maximum of 2000RPM