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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