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:


Type:step drill


Material:high-speed steel


Size:4-12mm,4-20mm, 4-32mm


Package Included:

D :3PCS/SET(1x 4-12mm drill+1x 4-20mm drill+1x 4-32mm drill)

C :1x 4-12mm drill

B :1x 4-20mm drill

A :1x 4-32mm drill