The GTFO-Wrist-Strap® is a concept originally developed in 2014 by Karl OscarDelta to facilitate emergency vehicle egress via side or rear windows in confined spaces.

The material of the projectile is also used in armour-piercing ammunition and only a small amount is required to destroy tempered glass, so don't be surprised by its small size...

Just a single strike directed from the wrist strap is enough to break glass!

To deploy simply remove wrist strap, place around thumb and forefinger, pull back on the projectile and release...

Watch the videos - http://www.gtfo-wrist-strap.com/

We only use the best quality shock-cord available:

- Braided Poly Outer
- Natural Rubber Core
- UV Stabilised

The GTFO-Wrist-Strap features our End User Adjustment System for a custom fit - not too tight, not too loose...just right!

The Original Window Breaker GTFO Bracelet For Vehicle Escape & Rescue!

GTFO-WRIST-STRAP® is a registered trademark.

Also available via

£25.00 GBP


£12.50 GBP


*** 150CT2023: Now supplied with a TWISTLOCK as standard when ordered with any GTFO-Wrist-Strap® ***

This is the latest version of the AHK designed to retrofit to the GTFO-Wrist-Strap® without the requirement to undo the knots. So if you already own a GTFO-Wrist-Strap® you can now add a handcuff key...

To install the AHK3-rf:

Simply position the channel of the key over the shock-cord
Pull and stretch the shock-cord
Insert shock-cord inside the key
Release the cord
The shock-cord will expand to its normal size inside the key.

To remove the AHK3-rf:

Hold the shock-cord
Pull on the key to extract the shock-cord from the channel.
Your AHK3 is now ready to use...

The AHK-rf works just like any other AHK3 to counter the security features found on high security handcuffs (key blocking blade, large keyway pin, deep set keyhole etc.)

The AHK3 has a full depth slit in the key flag to counter the stainless steel security plate on ASP High Security handcuffs.

From December 2020 we manufactured the AHK3 with the addition of a groove to indicate the direction of the key-flag when it's inside the key-way.

This new version has been in circulation since January 2021. The AHK-rf also features the groove.

Note: Where the AHK3 is sold as the 'Delta Key' it will be the older style AHK3 without the groove and channel.

The AHK3 works on the following handcuffs plus more that share the common key-way:


The AHK3 also operates handcuffs that have a bent pin in the keyway that would otherwise block a standard handcuff key.

Very little pressure is required to operate handcuffs with a key - never force a key to turn!

'Tactical' handcuff keys are prone to breaking when such excessive stress/torque is applied.This is a known issue with polymer handcuff keys that can result in a blocked keyway.

If the AHK breaks it has been designed to fragment into small parts that can be shaken free from the working parts, so it should not block the keyway and therefore allow for a back-up key to be used. When using the AHK we recommend that you use it to 'pick and sweep' the lock, taking care to feel for the movement of the working parts.

Gently rocking and tilting the key works best for some handcuffs and altering the depth works for others.

Attaching anything to the AHK to assist with turning the key can result in excess torque being applied.

£8.00 GBP/each (GTFO-Wrist-Strap® not included).