Photo 1 of GMTOOLS 5Pcs Step Drill Bit & 5Pcs Countersink Drill Bit Set, Titanium Coated, 50 Sizes of Step Bit for Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY

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Photo 1 of GMTOOLS 5Pcs Step Drill Bit & 5Pcs Countersink Drill Bit Set, Titanium Coated, 50 Sizes of Step Bit for Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIYPhoto 2 of GMTOOLS 5Pcs Step Drill Bit & 5Pcs Countersink Drill Bit Set, Titanium Coated, 50 Sizes of Step Bit for Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY