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Product Specifications
| Part Number : | 585-30520 |
| Item Package Quantity: | 1 |
| Item Dimensions | |
| Weight: | 2.40 Ounces |
| Length: | 4.40 inches |
| Width: | 2.40 inches |
| Height: | 0.10 inches |
Technical Details
- Includes: 5/64-Inch, 7/64-Inch, 5/32-Inch and 19/64-Inch
- 135 Degree split point
- M-42 Cobalt steel for tough metals
- 5 PC Set
- Weight 1 lbs.
Product Description
From the Manufacturer
5-Piece set matches up to spiral screw extractor sizes and other extractors.
Product Description
8% Cobalt for higher heat and abrasion resistance. Heavy-duty web construction for strength and durability. 135 split joint begins drilling immediately, minimizing bit walk. Tough metal drilliing, including heavy-duty abrasive alloy metal drilling on hardened steel (heat-treated).
Product Details
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Most Helpful Customer Reviews
1 of 1 people found the following review helpful:
5.0 out of 5 stars
Worked as advertised, never had one break,
By Software Guy (Austin, TX) - See all my reviews
Amazon Verified Purchase(What's this?)
This review is from: Irwin 30520 5 Piece Left Hand Cobalt 5/64-Inch to 19/64-Inch Cobalt Twist Drill Bit Assortment (Tools & Home Improvement)
Worked perfectly, have never had one break, seem stronger than most bits. Using metal to metal is machining: slow, steady patience is rewarded. I use a variable speed drill, very slow, and a rig to hold it steady. These worked perfect to remove a hardened steel bolt buried half an inch into a engine block. Stuffed hole with paraffin, used torch to heat up the bolt and the surrounding metal so the paraffin wicks into the threads, repeat two or three times, bolt eased out perfect.
1 of 1 people found the following review helpful:
5.0 out of 5 stars
must have,
This review is from: Irwin 30520 5 Piece Left Hand Cobalt 5/64-Inch to 19/64-Inch Cobalt Twist Drill Bit Assortment (Tools & Home Improvement)
Reverse drill bits are a must to have when extracting broken bolts. These drill bits come with the 11119 extractor/reverse drill bit set. You will break these, even though they're cobalt. It's nice to have spares on hand. 53535 is the extractor set, to have spare extractors.
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