49400 Type 170-AG Magnum Super Premium 135Â degree Split Point NAS 907B Jobber Length Drill Bit (10 pack) 0.4375" ID 14 1/2° PA gears are

14 1/2° PA gears are used extensively because of lower backlash and smoother

For installations where space is limited or the assembly is required to lay low

medium taper

The Durawhip® was designed to be installed on a jackhammer as a lightweight whip hose

Release is instantaneous

49400 Type 170-AG Magnum Super Premium 135Â degree Split Point NAS 907B Jobber Length Drill Bit (10 pack) 0.4375" ID 14 1/2° PA gears are135 split point provides fast penetration and accurate starting without a center punch. Withstands substantially higher drilling temperatures while maintaining sharpness. Click Here for product catalog Proudly Manufactured in the U. S. A