Home improvement tool set designed to remove rounded, broken and seized screws and bolts reliably. The kit brings reassurance to DIYers and mechanics who need fast, dependable extractions. Does the LANNIU Screw Extractor Set deliver on durability and coverage across common sizes?
⚡ At a Glance
- • Extraction Performance: Internal left-handed spiral and precision-machined surfaces bite into damaged fasteners for reliable removal
- • Best for: DIY enthusiasts and professional mechanics tackling seized, rounded or broken bolts and studs
- • Not ideal for: Very small, delicate electronics screws where specialised micro-extractors are required
Heat-treated high-carbon (chromium-molybdenum) steel construction gives strength and wear resistance. A 25-piece size range covers most common bolt and screw dimensions.
Strong, lasting performance – thanks to heat-treated high-carbon steel
Heat-treated chromium-molybdenum high-carbon steel increases hardness and resistance to deformation under torque. Precision heat treatment helps maintain extractor geometry during heavy use.
Durable extractors resist rounding and snapping during repeated removals, suitable for workshop and onsite jobs.
Secure grip on rounded fasteners – with internal left-handed spiral flutes
Internal left-handed spiral grooves are precision machined to engage damaged heads and increase bite as the extractor is turned. The left-handed form drills into the damaged surface for faster tapping.
Faster, more reliable removal of rounded or stripped bolts reduces time spent on stuck fasteners.
Wide size coverage – with 25 precision-machined extractors
Set contains 25 sizes ranging from 1/8" to 7/8", made to match common imperial bolt and screw dimensions listed by the manufacturer.
Reduces the need for multiple purchases by covering most household and workshop fasteners.
✨ The 4 Key Reasons for LANNIU Screw Extractor Set
- Heat-treated high-carbon steel – Withstands repeated torque for heavy-duty extraction jobs and resists deformation
- Internal left-handed spiral flutes – Bite into rounded heads for faster, more reliable removals
- Comprehensive 25-piece size range – Covers most common bolt and screw sizes without additional purchases
- Compatible with breaker bars and ratchets – Allows extra leverage on stuck fasteners for tougher jobs
📋 Technical Details at a Glance
- Category: Home Improvement
- Brand: LANNIU
- Product ID: B07YD2V1M7
- Material: Heat-treated high-carbon steel (chromium-molybdenum steel)
- Set size: 25 pieces
❓ Frequently Asked Questions
Q: Can the set remove rounded or stripped bolts?
A: Yes. The internal left-handed spiral design and precision-machined surfaces are intended to bite into rounded heads, and user feedback reports quick, reliable removal of stripped bolts.
Q: What sizes are included in the 25-piece set?
A: The set includes 25 sizes: 7/8", 27/32", 13/16", 25/32", 3/4", 23/32", 11/16", 21/32", 5/8", 19/32", 9/16", 17/32", 1/2", 15/32", 7/16", 13/32", 3/8", 11/32", 5/16", 9/32", 1/4", 7/32", 3/16", 5/32", and 1/8".
Q: Are the extractors durable enough for heavy use?
A: Yes. Heat-treated high-carbon (chromium-molybdenum) steel construction is specified for durability, and user reviews note that the extractors withstand heavy use.
🏆 Our Verdict
The set suits DIYers and professional mechanics who need a dependable solution for seized, rounded or broken fasteners. Heat-treated high-carbon steel and an internal left-handed spiral deliver grip and long-term durability across a broad 25-piece size range. The kit represents strong long-term value for anyone frequently tackling stuck bolts and studs.
