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