"Very good tool easy to use well worth the money"verified buyer, 02/22/2024
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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Dangerfield 'J-Tool' Reach-Through Door Thumbturn Opening ToolFree UK delivery over 30 Royal Mail options 30 day easy returns European delivery available Reach through J tool A J tool for authorised thumbturn reach through work The Dangerfield J Tool is a reach through door tool for suitable double door gaps and internal thumbturn operation. It is a locksmith tool for authorised non destructive entry where the door and lock layout allow the method. J toolshape Thumbturnroute Doorbypass 9. 99GBP 5 5 verified
Free UK delivery over £30
Royal Mail options
30-day easy returns
European delivery available
Reach-through J-tool
A J-tool for authorised thumbturn reach-through work
The Dangerfield J-Tool is a reach-through door tool for suitable double-door gaps and internal thumbturn operation. It is a locksmith tool for authorised non-destructive entry where the door and lock layout allow the method.
J-toolshape
Thumbturnroute
Doorbypass
9.99GBP
"The tool is well made"verified buyer, 11/14/2022
Why buy this
Buy this when the door gap gives access to the thumbturn
Some commercial double doors leave a narrow route to the internal thumbturn. A shaped reach-through tool lets a trained user operate the thumbturn without attacking the cylinder.
Reach-through method
Designed for suitable gaps between double doors.
Thumbturn focus
Targets the internal thumbturn rather than the keyway.
Non-destructive route
Useful when authorised access can be achieved without drilling or pulling.
Use route
How to assess the door first
Check the door gap, thumbturn position, and authorisation before using the tool. Work slowly so the tool does not scratch surfaces or bind in the gap.
- Confirm the gap and thumbturn layout.
- Work gently to avoid door damage.
- Use only for authorised entry work.
Helpful next step: bypass tools.
Product details
What to know before you choose
| Brand | Dangerfield |
| Product type | Reach-through J-tool |
| Method | Thumbturn operation |
| Door focus | Suitable double-door gaps |
| Best use | Authorised non-destructive entry |
Use lock picking and entry tools responsibly, only on locks you own or have permission to work on, and check local laws before buying.
Questions
Quick answers
Is it for every door?
Only where the layout suits it. The gap and thumbturn layout must be suitable.
Does it pick the lock?
It leaves the keyway alone. It operates the thumbturn where access is possible.
Who should use it?
Trained users handling authorised door entry.
What should I protect?
Avoid scratching doors, frames, or hardware while working.
Add a non-destructive thumbturn route
For the right door layout, a J-tool can avoid unnecessary cylinder attack.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1974 reviews
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Product Reviews
★★★★★ 5
Great value
I recently had to replace the starter on my 2001 325i E46 with about 150k miles. While I had the intake off, I figured it would be a good time to replace the CCV because I was unsure if it had ever been done. My old CCV literally fell apart as I removed it, so I'm glad I replaced it.
The new parts were a little tough to put together, but overall came together well enough. A lot can be forgiven for the price. I would recommend assembling the system before installing in your vehicle to get a good sense of how it all goes together and to hopefully loosen up the fittings just a tad before installation. 50skid on youtube has a great DIY for doing this job.
I only finished this job yesterday, but my car has been running great. I can't yet confirm, but this may have solved my running lean problem.
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Reviewed in the United States on January 27, 2023
★★★★★ 3
Cheap plastic parts -- good fit
They are what they are: Cheap plastic parts. They fit, but long-term durability will be a challenge. Probably will buy from FCP Euro going forward (and just did for a fuel line replacement).
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Reviewed in the United States on March 12, 2024
★★★★★ 5
2001 325i
Great quality fits perfect durable. no more leaks works great. Great price.
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Reviewed in the United States on September 29, 2024
★★★★★ 1
Does not connect
First the hoses do not connect together causing all kinds of vacuum leaks. There is no rifling in the diaphragm so oil leaks back up. Cheap piece of plastic
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Reviewed in the United States on June 9, 2022
★★★★★ 5
Amazon size charts need help
Size: Small, Color: Dark Denim
The dress is sharp. Well made. The Amazon size guide and AI size helper not so great. It was suggested to me to order a size large. Well I knew that was wrong so I went with the medium due to size chart. Still way too big. Had to return the medium and order a small . That also was too big and now had to order an XS . What a hassle. Please correct the size chart. Would very much appreciate the accessories listed that the model is wearing such as who’s boots she is wearing
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Reviewed in the United States on January 16, 2026