Precision Twist Drill R18B Type B General Purpose Heavy Duty Jobber Length Drill, NO 21, 3-1/4 in L, 135 deg, HSS

• High speed steel provides good wear-resistance
• Steam oxide surface treatment for increased wear resistance and lubricity
• Low thrust design self-centering split point for easier penetration
• Oxide prevents chip building, galling and welding on the work piece, it is commonly used on low carbons, stainless steel and ferrous metalsnon-coolant throughWeb-thinned
• Tapered web configuration
• No coolant channel

Precision Twist Drill Jobber Length Drill| Type B General Purpose Heavy Duty| Series: R18B| NO 21| 3-1/4 in Overall Length| 4XD Cutting Depth| 2 Flutes| Spiral Flute| 2-1/8 in Flute Length| 0.159 in Shank| Straight Shank| 135 deg Point| Self-Centering Split Point| Right Hand Cutting| HSS Cutting Edge| HSS| Steam Oxide| Applicable Materials: Magnetic Soft Steel| Structural Steel/Case Carburising Steel| Plain Carbon Steel| Alloy Steel/Hardened and Tempered Steel| Free Machining Stainless Steel| Austenitic| Ferritic + Austenitic| Martensitic| Graphite/Malleable Cast Iron