Characteristic:
Specific pitch design, one drill for many sizes, very convenient.
Sustainable.
Cutting material: iron sheet, aluminum, insulation board, PVC plate wood thickness in 4mm. The hole with a drill can play a variety of.
Specifications:
Type: step drill
Material: high speed steel
Size: 4-12mm, 4-20mm, 4-32mm
Package Included:
1x 4-12mm drill
1x 4-20mm drill bit
1x 4-32mm drill bit