4pcs HSS Contersink Drill/Step Drill/Tapered Cone Drill/Saw Dill

Description:
4pcs HSS Contersink Drill/ Step Drill/Tapered Cone Drill/Saw Dill Bit Titanium Coated

Material:  High Speed Steel 4241
Surface: Titanium Plated
Handle: Hexagon Shank
Quantity: 4pcs
Weight: 265G
Scop: Used for the hardness of the material which is below 25°, like iron borad, steel board, PVC board, Insulation board,  4mm thickness within the timber, ect.

Specification:
Step drill  :      4~12mm (4,6,8,10,12mm), 5 steps
Saw Drill  :      6mm
Contrersink :   12.4mm  90 Degree
Tapered cone drill : 8~20mm

Features:
High speed steel material, more durable.
Titanium coated to reduce friction and run cooler
No need for a pilot hole,  can automatically deburr holes as you drill.
4pcs combination, can meet different  demands.
Working with water cooling, can effectively extend the service life of bit, drilling speed 250--400 recommended.
Suitable for use in hardness under 25 ° artifacts, such as carbon steel plate, sheet iron, insulation board, PVC board,wooden board, plate thickness under 4mm.

Package included:
1x 4-12mm Step Drill
1x 6mm Saw Drill
1x 12.4mm Contrersink
1x 8-20mm Tapered cone drill