3 pcs HSS Spiral Grooved Step Drill Set
Surface: White Finish or Titanium Coated are available.
Packaging: Metal Case or Wooden Box are available.
Item No.: SDB301
Size include:
4 - 12mm x 5 step ( 4 - 12 x 9 step are available ) 4 - 20mm x 9 step 4 - 30mm x 14 step