"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 7 - Jul 12
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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
4.5 ★★★★★
Based on 2451 reviews
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Product Reviews
★★★★★ 4
Very narrow
Size: 10 Wide, Color: Cognac
Run narrow. For very narrow feet. Wide width fits like a regular width.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
★★★★★ 5
Comfortable Shoes Right Out of the Box
Size: 9, Color: Black
I bought these shoes for my husband. He has a very hard time finding quality, comfortable shoes. These shoes are just as comfortable as his New Balance. He uses them as a dress shoe and wears them at least once a week. There was no break in period necessary. They were comfortable right out of the box! The only thing we didn't like was the white sole color. Once I knew he was going to keep them, I used a black sharpie marker to color the soles black. Instant amazing, comfortable dress shoes. They were well worth the cost. If you or your SO needs a comfortable pair of shoes, we highly recommend them.
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Reviewed in the United States on September 2, 2025
★★★★★ 1
Paid for new, received used.
Size: 9.5 Wide, Color: Cognac, Size: 9.5 Wide, Color: Cognac
Arrived dirty as if someone whore it for more than a few days. Maybe I was mistaken, but I saw nothing about “previously used” on the Amazon page. Returned it.
I would suggest that the company use quality control when it comes to shipping. The shoes seem find otherwise. I ordered 9.5 and it was just a bit tight. If I reorder I will go for size 10.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
Overall Great.
Size: 10.5 Wide, Color: Black
Great product. Great value. Great style. Overall great.
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Reviewed in the United States on March 3, 2026
★★★★★ 3
Decent Shoes with Misleading Description (Not Leather)
Size: 12 Wide, Color: Black, Size: 12 Wide, Color: Black
I only look for leather when I’m purchasing dress shoes. Under the description “details” on this item it lists the shoe as leather upper and inner lining. A photo shows “genuine Napa leather lining”. If you keep reading (which I have now that I’ve received the shoes) it shows “faux leather” in the small print and that is not “leather”. I run a small leather business and this irks me because it’s clearly false advertising. The details also show the product is made in Brazil but when they arrived today, the shoe tag shows “Made in China” and “Man Made upper and lower”. I don’t hate the shoes. They look nice. What I know is they won’t hold up over time like leather, which is why the description should be accurate and not misleading.
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Reviewed in the United States on March 28, 2026
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