SPI Expanding 5C Collet Kit - 71-560-7

• Highly effective expansion up to .006".
• Soft head for easy machining.
• Heat treated tool steel 5C collet shank, precision ground over all.
• One piece construction.
• Head width 1".
• Kit includes collets No. 1 to No. 4 in fitted stand, range 5/16 - 1-15/16".