MAGNETIC SINE PLATE V-47M

ER40, Hole Size 13/32″.
Tool holding range 0.406″ to 0.367″.
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″).