VALYRIANTOOL 5PCS 1/8" M35 Cobalt Left Hand Drill Bits Set for Removing Broken Stubs, Bolts and Screws, Reverse Twist Drill Bits

VALYRIANTOOL 5PCS 1/8" M35 Cobalt Left Hand Drill Bits Set for Removing Broken Stubs, Bolts and Screws, Reverse Twist Drill Bits

High Quality: M35 Cobalt steel precision ground drill bits for extra durability and long lifetime Stubby Sizes: Drill bits measure only 2-1/4 inch in overall length with 1-1/16 inch cutting flute, allowing access to hard-to-reach and tight spaces Efficient Design: 135 degree split point two-blades special drill tip for perfect self-centering and fast drilling Application: Used for removing damaged stubs, bolts and screws, or drilling a pilot hole for a screw Multi-Purpose Use: Suitable for drilling stainless steel, Aluminum and other hard metals VALYRIANTOOL COBALT STUBBY LEFT HAND DRILL BIT

Instructions:
1. Grind or flattern the head of damaged bolt or screw.
2. Use a heavy hammer and center punch to make the centre of bolt or screw.
3. Drill into the bolt or screw in reverse using a left hand drill bit with lightweight oil.
4. Most bolts or screws come out before the hole drilling operation is finished.
5. The hole drilled will form a pilot hole for a screw extractor if the bolt or screw isn't removed out.