Description:

SizeTotal Length: 40mm / 1.57"; Diameter(Outer): 12.7mm /1/2", 11.8mm / 0.46"; Diameter(Inner): 3.175mm/0.125".. MaterialMade of carbon steel material with good flexibility, and wear resistance, durable to use.. FeatureFirm and stable clamping, with high precision and good grip stability.. FunctionFor CNC machine tool chuck conversion. Conversion size: 1/2 to 1/8 (12.7mm to 3.175mm).. ApplicationCan be used to clamp bit tool, boring cutter, engraving machine, reamer, etc..