AMSUO 15-Piece Milled Screw Extractor & Left-Hand Drill Bit Set (EXTD-15) — Bearing Steel Extractors No.1–No.6 + M35 Cobalt Left-Hand Drills 5/64"–13/32"

AMSUO 15-Piece Milled Screw Extractor & Left-Hand Drill Bit Set (EXTD-15)

The widest set in the range — bearing-steel milled extractors with M35 cobalt left-hand drills out to 13/32". Where a 10-piece set stops at 19/64", this one keeps going: the larger left-hand drills cover bigger broken bolts, studs and seized fasteners, and extractors No.1–No.6 cover the smaller jobs as well. Left-hand drilling still does the heavy lifting — open the pilot hole in reverse, then back the fastener out instead of driving it deeper. All pieces sit in a moulded tray with an individual slot for each tool. Factory-direct from a 20-year precision-tools manufacturer with ISO 9001 / 14001 / 45001 triple-system certification.

What's in the Box

Item code: EXTD-15. Extractor material: bearing steel. Extractor range: No.1–No.6 (6 pieces). Left-hand drill material: M35 cobalt. Left-hand drill sizes: 5/64" (≈2.0 mm), 7/64" (≈2.8 mm), 5/32" (≈4.0 mm), 1/4" (≈6.4 mm), 19/64" (≈7.5 mm), 5/16" (≈7.9 mm), 11/32" (≈8.7 mm), 3/8" (≈9.5 mm), 13/32" (≈10.3 mm). Total: 15 pieces (6 extractors + 9 left-hand drills).

Key Features

• Widest coverage in the range — left-hand drills out to 13/32" handle larger broken bolts and studs
• Matched extractor and drill pairs remove the guesswork from size selection
• Bearing-steel milled extractors deliver higher torque and precise, non-slip engagement
• M35 cobalt left-hand drills cut counterclockwise so the fastener backs out instead of driving deeper
• Moulded tray keeps every piece in its own slot

Recommended Applications

• Larger broken bolts, studs and seized fasteners
• Automotive and heavy equipment repair — suspension, exhaust and driveline hardware
• Industrial plant maintenance and machine breakdown work
• Plumbing, HVAC and agricultural equipment repair
• Workshop and fabrication jobs where a partial set is not enough

How to Use

Center-punch the broken fastener, drill with the matched left-hand bit in reverse rotation, then tap in the extractor and turn counterclockwise to remove it. Keep both tools square and wear eye protection.

Quality & Certification

Produced in an ISO 9001 / 14001 / 45001 triple-certified facility. Every piece is inspected before packing.

FAQ

How is this different from the 10-piece set? It adds larger left-hand drill bits — up to 13/32" — so it covers bigger broken bolts and studs that a 10-piece set cannot reach.

Which extractors are included? Six bearing-steel milled extractors, No.1 to No.6, matched to nine left-hand drill bits from 5/64" to 13/32" — 15 pieces in total.

What are the drill sizes? 5/64", 7/64", 5/32", 1/4", 19/64", 5/16", 11/32", 3/8" and 13/32".

Do you supply OEM packaging? Yes. Send your requirement to [email protected].