Irwin 63120 Jobber Drill Bit, 5/16 in Dia, 4-1/2 in OAL, Spiral Flute, 5/16 in Dia Shank, Cylinder Shank, Pack of 6 GRINDERS Lightweight and its unique design

Lightweight and its unique design eliminates the need for an external shock absorber

heavy-duty work suspenders are fully adjustable and have full elastic straps for extra comfort

WPC flooring

wear mark indicator indicating when the bit no longer meets ANSI diameter requirements and a reinforced flute for durability and minimized vibration

Irwin 63120 Jobber Drill Bit, 5/16 in Dia, 4-1/2 in OAL, Spiral Flute, 5/16 in Dia Shank, Cylinder Shank, Pack of 6 GRINDERS Lightweight and its unique designHSS with M 35, 5% cobalt, for higher heat and abrasion resistance; heavy duty web construction for strength and durability. Split point begins drilling immediately, minimizing bit walk when used in applications such as metal drilling, including heavy duty abrasive alloy metal drilling on hardened steel (heat treated). Unit: EA UPC: 042526631207 Model Number: 63120