10pc Screw Extractor & Cobalt Left Hand Drill Set
Broken bolts and stripped screws don’t stand a chance. This 10-piece set gives you the tools to drill out and remove damaged fasteners quickly and cleanly, without ruining the threads. Each left hand drill is paired with its matching extractor, so there’s no guessing which goes with which.
Cobalt Left Hand Drill Bits
- Reverse flutes cut while your drill runs in reverse.
- They often back the broken bolt out as you drill, so you don’t need the extractor.
- Cobalt steel for strength and heat resistance.
Multi-Fluted Screw Extractors
- Machined alloy steel built to last.
- The flutes bite into the drilled hole and turn the broken fastener out counterclockwise.
- They won’t damage the original threads.
How to Use It
- Drill a hole into the center of the broken fastener with the marked left hand bit.
- If the bolt doesn’t back itself out, insert the matching extractor.
- Turn counterclockwise with a tap wrench. The flutes lock in like a corkscrew and pull it out.
Extractor, Drill and Bolt Size Chart
| Extractor | Left Hand Drill | Removes Screws and Bolts |
|---|---|---|
| #1 | 5/64″ | 3/32″ to 5/32″ (2.5 mm to 4 mm), No. 3 to No. 6 |
| #2 | 7/64″ | 5/32″ to 7/32″ (4 mm to 6 mm), No. 6 to No. 12 |
| #3 | 5/32″ | 7/32″ to 9/32″ (6 mm to 8 mm), No. 14 |
| #4 | 1/4″ | 9/32″ to 3/8″ (8 mm to 10 mm), 1/8″ NPT |
| #5 | 19/64″ | 3/8″ to 5/8″ (10 mm to 16 mm), 1/4″ NPT |
Specifications
| Pieces | 10 (5 drills, 5 extractors) |
|---|---|
| Left hand drills | 5/64″, 7/64″, 5/32″, 1/4″, 19/64″ |
| Drill material | Cobalt |
| Extractors | Multi-fluted, #1 to #5 |
| Extractor material | Alloy steel |
| Case | Steel, sizes marked |
| SKU | DS-SE10P |
Applications
- Broken bolts, screws and studs
- Stripped and rounded screw heads
- Seized fasteners in engines, equipment and machinery
- Mechanics, contractors and metalworkers
Stop fighting seized fasteners. Drill it, grip it, and get back to work.
Questions? Call 800-350-8665.

