JD-5500 Nail Drill Machine

  1. Turn off the power before changing the bit .
  2. Check the cleanliness of the collet before assembling new bit
  3.  Make sure that inside collet is clean.
  4. Please insert the bit in the bottom and lock the bit.
  5. Please choose standard bit rather than asymmetric or damaged bit.
  6. Place the bit which is not in use temporarily on a clean dry place.
  7. If the handle inside is damaged, we must let professional and technical personnel repair it or disassemble it.