Bestechno Titanium Nitride Coated High Speed Steel Step Drill Set (3 Pieces)

Description

Specifications: Material:HSS 4241(Suit for use in hardness under 25 degree artifacts,The plate thickness under 5 mm) Surface treatment: Ti Type: 4-32mm （4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm ） 4-20mm（4,6,8,10,12,14,16,18,20mm) 4-12mm（4,6,8,10,12mm) Handle Length:7.1mm The clamping handle shape: 6 Package Included: 3pcs step drill