Drillco 350N Nitro HSS Drill Bit Set – 15-Piece Mechanics Length, Black & Gold Oxide, 135° Split Point

Description

• High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
• Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
• These round shank tools have flats ground onto three sides to reduce slippage of the bit when used in drill chucks
• When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
• 15 screw machine length drill bits ranging in size from 1/16″ to 1/2″ in 1/32″ increments