DOUBLE WAY SINE PLATE, FINE POLE MAGNETIC CHUCK V-66MFS

ER40, Hole Size 11/16″.
Tool holding range 0.688″ to 0.648″.
Made of high alloy spring steel.
Hardened surface to 44-48 HRc.
Maximum gripping force with 16 jaws.
Runout precision of 0.0006″ (Concentricity of .0003″).