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Dangerfield 'J-Tool' Reach-Through Door Thumbturn Opening Tool

UKBumpKeys

Dangerfield 'J-Tool' Reach-Through Door Thumbturn Opening Tool

£ 999
Delivery on Thursday, Nov 5 Details
or fastest delivery Tuesday, Nov 3 Details
In stock (order now for earlier dispatch)
Delivery on Thursday, Nov 5 Details
or fastest delivery Tuesday, Nov 3 Details
In stock (order now for earlier dispatch)
30 day returns. Secure Payments. Dispatches from the UK.

Chris Dangerfield says: “Pairs well with the kit”

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About This Item

  • Open the Thumbturn: Reaches through suitable double-door gaps to operate the internal thumbturn.
  • Leave the Cylinder Alone: It works the thumbturn, not the keyway, so no drilling or pulling.
  • Shaped to Reach: The J shape gives you a route through narrow double-door gaps.
  • Work Gently: Ease it slowly through the gap to avoid binding or scratching the door.
  • For Door Entry Work: Suits locksmiths and locksport enthusiasts doing door entry.

Description

Free UK delivery over £30 Royal Mail options 30-day easy returns European delivery available
Reach-through J-tool

A J-tool for 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 non-destructive entry where the door and lock layout allow the method.

J-toolshape
Thumbturnroute
Doorbypass
9.99GBP
Dangerfield J-Tool reach-through thumbturn tool
5/5 verified buyer
"Very good tool easy to use well worth the money"
verified buyer, 22/02/2024
5/5 verified buyer
"The tool is well made"
verified buyer, 14/11/2022
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 you 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 access can be achieved without drilling or pulling.

Dangerfield J-Tool reach-through thumbturn tool detail
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.

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 Non-destructive entry
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?

Locksmiths and entry specialists handling 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.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Bizum
  • Google Pay
  • iDEAL Wero
  • Maestro
  • Mastercard
  • PayPal
  • Satispay
  • Shop Pay
  • Union Pay
  • USDC
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Dangerfield J-Tool reach-through thumbturn tool
UKBumpKeys

Dangerfield 'J-Tool' Reach-Through Door Thumbturn Opening Tool

£ 9.99
Free UK delivery over £30 Royal Mail options 30-day easy returns European delivery available
Reach-through J-tool

A J-tool for 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 non-destructive entry where the door and lock layout allow the method.

J-toolshape
Thumbturnroute
Doorbypass
9.99GBP
Dangerfield J-Tool reach-through thumbturn tool
5/5 verified buyer
"Very good tool easy to use well worth the money"
verified buyer, 22/02/2024
5/5 verified buyer
"The tool is well made"
verified buyer, 14/11/2022
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 you 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 access can be achieved without drilling or pulling.

Dangerfield J-Tool reach-through thumbturn tool detail
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.

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 Non-destructive entry
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?

Locksmiths and entry specialists handling 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.

View product