G-D918S-A3N High-performance 3D External Coolant Twist Drill for Plain Steel Machining D11.90-15.20 Roughing End Mills 5 Iron 20-5mm (Forward) 20

5 Iron 20-5mm (Forward) 20 5 Iron 20-6mm (Forward) 20 6 Iron 20-8mm (Forward) 20 8 Iron 12-2mm (Forward) 12 2 Iron 12-3mm (Forward) 12 3 Iron 12-4mm (Forward) 12 4 Iron 12-5mm (Forward) 12 5 Iron 25-2mm (Forward) 25 2 Iron 25-3mm (Forward) 25 3 Iron 25-4mm (Forward) 25 4 Iron 25-5mm (Forward) 25 5 Iron 16-2mm (Reverse) 16 2 Iron 16-2

0 6 6 50 Ra0

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2 16-55° Reverse 16 55 R0

G-D918S-A3N High-performance 3D External Coolant Twist Drill for Plain Steel Machining D11.90-15.20 Roughing End Mills 5 Iron 20-5mm (Forward) 20G 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