Square Hole Drill Bit Adapter & 4pcs Square Hole Drill Bit, Mortising Attachment for Wood Drill Press Mortise & Tenon Tools Woodworking Mortise Machine Easy Install or Disassemble Fixing Bracket

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  • Content and Material You will get 1 square hole drill bit adapter and 4 pieces of square hole drill bits. Square hole drill adapter is made of all steel castings, which is strong and sturdy. Note If it's stored in a humid environment for a long time, it may cause some surface problems, just wipe some protective oil to improve it.
  • Practical Tool Square hole drill bit adapter can ensure accurate and stable drilling operations. There are 4 pieces of square hole drill bits in distinct sizes 6.4mm 0.25 inch, 8mm 0.31 inch, 9.5mm 0.37 inch and 12.7mm 0.5 inch.
  • Note This square hole drill bit adapter is not suitable for lithium battery electric drills and bench drills without round hole bearings. It s suitable for old-fashioned bench drills and household bench drills, please note this point before ordering. If your bench drill needs to use a square hole drill bit, please use it with an adapter included in the set.

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