25 Piece Bright HSS Jobber Drill Set 1.0-10.0 x 0.5mm, 11.0-13.0 x 1.0mm, plus 3.3, 4.2 & 6.8mm with BONUS Stubbie Folding Knife Whilst tungsten carbide is extremely

Whilst tungsten carbide is extremely hard it is also brittle so it is important to avoid bit “chattering" as this is the most common cause of tool failure

12 Piece HSS-Co5 Cobalt Drill Refill Set

Saber HSS-Co5 (Cobalt) TiN Coated Cross Hole Round Shank 90 Deg

170mm blade length

As the layer wears it continuously reforms

25 Piece Bright HSS Jobber Drill Set 1.0-10.0 x 0.5mm, 11.0-13.0 x 1.0mm, plus 3.3, 4.2 & 6.8mm with BONUS Stubbie Folding Knife Whilst tungsten carbide is extremelyBordo Metric 25 Piece Quick Silver M2 HSS Twist Drill Set Bonus Stubbie Folding Knife 1. 0 10. 0mm x 0. 5mm rises, 11. 0 13. 0 x 1. 0mm rises plus 3. 3, 4. 2 and 6. 8mm DIN338 118 Split Point (crankshaft point). Split point is self centering and reduces the need for end thrust. Friction at workpiece is reduced. 118 point angles are ideal for use in materials such as mild steel and cast iron. The 118 point creates easily controlled chips which are wide