• High precision SK  Collets
  • Works on all SK Collet Chuck Holder
  •  SK25 SK20 SK16 SK10 and SK6
  • High-performance spring steel
  • All surfaces precision ground
  • Twice heat treatment hardened   HRC48
  • SK Collet Clamping Range 1-36mm
  • Concentricity is less than .0002 and 0.0005 at collet face available
  • Oxide black