J-shaped design fits narrow gaps between double doors for easy access
Allows rotation of internal thumbturn to retract the latch without damaging hardware
Non-destructive entry method preserves door and lock integrity
Includes spare hex screws and hex key for field servicing and adjustment
Compatible with air wedge and latch shims for versatile use on tight or spring-latch doors
Summarized by Shop
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
Tool Type
Reach-through J tool
Operation
Thumbturn focus, internal latch
Material
Metal and plastic
Included Accessories
Spare hex screws, hex key
Color
Silver, red, black
Pattern
Solid
Summarized by Shop
4.7
10 ratings
5
4
3
2
1
Wish it was longer
M
michael · July 29, 2026
J-tool
Very good tool easy to use well worth the money
P
Paul · February 22, 2024
J tool
Had to use it on day it arrived, easy to use , smooth turning mechanism, excellent addition to my toolkit