G-D918S-A3N High-performance 3D External Coolant Twist Drill for Plain Steel Machining D11.90-15.20 Swiss Type Lathe Hexagonal (1/4”) Adaptor – Square

Hexagonal (1/4”) Adaptor – Square (1/4”) for Socket Inserts

Inch 11-12" / 279

03mm 202g - 0

The accuracy level is divided into two types: A and B

G-D918S-A3N High-performance 3D External Coolant Twist Drill for Plain Steel Machining D11.90-15.20 Swiss Type Lathe Hexagonal (1/4”) Adaptor – SquareG D918S High performance Plain Steel Machining Twist Drill Suitable for drilling under soft steel, interrupted cut, poor cooling and other difficult conditions. The brand new wavy edge design takes into account both the tip strength and cutting sharpness. The brand new G type slot design enhances the chip breaking performance an improves the tool rigidity. The brand new substrate coating has been upgraded, featuring stronger adaptability to working